'Generation Lockdown': PSA highlights how active shooter drills have become the new normal

With active shooter drills becoming commonplace in virtually every American school since two students carried out a 1999 attack at Columbine High School, children who have grown up in an era of mass shootings have become so well versed on how to respond to those horrific events that they could themselves lead similar training sessions.

A new public service announcement released by March For Our Lives, the organization formed in the days following the 2018 massacre at Marjory Stoneman Douglas High School in Parkland, Fla., imagines exactly that.

In the two-minute spot, titled “Generation Lockdown,” a young girl leads an active shooter training session for a group of employees at an office in Southern California

“If there was an active shooter, you would all be dead,” the girl, identified as Kayleigh, says matter of factly.

“When you talk out loud, the shooter can tell where you are and where you’re hiding,” she says. “Sometimes we play the game ‘Who can stay quietest the longest.’”

The girl tells the employees that blocking the doors with furniture and placing paper over windows can help them hide from active shooters.

“You can't cry,” she says, “it gives away your position.”

If the shooter comes into the room, “screaming won't do anything,” she adds. “You have to fight back.”

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Hundreds of thousands attend March for Our Lives in Washington DC
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Hundreds of thousands attend March for Our Lives in Washington DC
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: Students from Centreville, Virginia wear targets on their chests as they arrive for the March for Our Lives rally March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers, and parents are expected to gather for the anti-gun violence rally, spurred largely by the shooting that took place on Valentine's Day at Marjory Stoneman Douglas High School in Parkland, Florida where 17 people died. (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - MARCH 24: Students from Centreville, Virginia wear targets on their chests as they arrive for the March for Our Lives rally March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers, and parents are expected to gather for the anti-gun violence rally, spurred largely by the shooting that took place on Valentine's Day at Marjory Stoneman Douglas High School in Parkland, Florida where 17 people died. (Photo by Win McNamee/Getty Images)
A student from Baltimore, Maryland, holds a protest sign during the March for Our Lives Rally in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
A student from Baltimore, Maryland, holds a protest sign during the March for Our Lives Rally in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
Participants hold up signs as students and gun control advocates hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Aaron P. Bernstein
A woman wears a protest shirt as people arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
A demonstrator arrives before students and gun control advocates hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Eric Thayer
WASHINGTON, DC - MARCH 24: Protesters gather for the March for Our Lives rally along Pennsylvania Avenue March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers and parents gathered in Washington for the anti-gun violence rally organized by survivors of the Marjory Stoneman Douglas High School school shooting on February 14 that left 17 dead and 17 others wounded. More than 800 related events are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Chip Somodevilla/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
WASHINGTON, DC - MARCH 24: People protest during the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Mark Wilson/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters arrive for the March for Our Lives rally March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers, and parents are expected to gather for the anti-gun violence rally, spurred largely by the shooting that took place on Valentine's Day at Marjory Stoneman Douglas High School in Parkland, Florida where 17 people died. (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters arrive for the March for Our Lives rally March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers, and parents are expected to gather for the anti-gun violence rally, spurred largely by the shooting that took place on Valentine's Day at Marjory Stoneman Douglas High School in Parkland, Florida where 17 people died. (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters arrive for the March for Our Lives rally March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers, and parents are expected to gather for the anti-gun violence rally, spurred largely by the shooting that took place on Valentine's Day at Marjory Stoneman Douglas High School in Parkland, Florida where 17 people died. (Photo by Win McNamee/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters hold signs as they wait for the beginning of the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Alex Wong/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters Daisy Hernandez of Virginia (R) and Hunter Nguyen of Maryland (L) hold their hands up as they wait for the beginning of the March for Our Lives rally on March 24, 2018 in Washington, DC. More than 800 March for Our Lives events, organized by survivors of the Parkland, Florida school shooting on February 14 that left 17 dead, are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Alex Wong/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / ANDREW CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / ANDREW CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / ANDREW CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. Galvanized by a massacre at a Florida high school, hundreds of thousands of Americans are expected to take to the streets in cities across the United States on Saturday in the biggest protest for gun control in a generation. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters gather for the March for Our Lives rally along Pennsylvania Avenue March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers and parents gathered in Washington for the anti-gun violence rally organized by survivors of the Marjory Stoneman Douglas High School school shooting on February 14 that left 17 dead and 17 others wounded. More than 800 related events are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Chip Somodevilla/Getty Images)
WASHINGTON, DC - MARCH 24: Protesters gather for the March for Our Lives rally along Pennsylvania Avenue March 24, 2018 in Washington, DC. Hundreds of thousands of demonstrators, including students, teachers and parents gathered in Washington for the anti-gun violence rally organized by survivors of the Marjory Stoneman Douglas High School school shooting on February 14 that left 17 dead and 17 others wounded. More than 800 related events are taking place around the world to call for legislative action to address school safety and gun violence. (Photo by Chip Somodevilla/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / Alex Edelman (Photo credit should read ALEX EDELMAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
A man holds a sign as people arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / Andrew CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
TOPSHOT - People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
People arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Angela Sitaras, a junior at Marjory Stoneman Douglas High School in Parkland, Florida, holds a sign referring to the 17 students killed in the February 14 mass shooting at her high school as she rallies with thousands of other students and young people at the "March for Our Lives" event demanding gun control in Washington, U.S., March 24, 2018. REUTERS/Jonathan Ernst
Protesters raise signs during a "March For Our Lives" demonstration demanding gun control in New York City, U.S. March 24, 2018. REUTERS/Shannon Stapleton
Michael J. Weissman, 18, a Marjory Stoneman Douglas student, where a mass shooting occurred last February 14 that left 17 dead, carries a sign as he and other participants hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Leah Millis
Participants hold up signs as students and gun control advocates hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Aaron P. Bernstein
Participants carry signs and show slogans on their hands as students and gun control advocates hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Aaron P. Bernstein TEMPLATE OUT.
Isabel White, an 8th grader who will go to Marjory Stoneman Douglas High School in Parkland, Florida next year, displays a banner as students and gun control advocates hold the "March for Our Lives" event demanding gun control after recent school shootings at a rally in Washington, U.S., March 24, 2018. REUTERS/Jonathan Ernst
WASHINGTON, DC - MARCH 23: The stage for the March for Our Lives rally is seen along Pennsylvania Ave NW as workers build the stage ahead of the March for Our Lives rally on Friday, March 23, 2018, in Washington, D.C. (Photo by Salwan Georges/The Washington Post via Getty Images)
The US Capitol building is seen as people arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / Andrew CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
The US Capitol building is seen as people arrive early for the March For Our Lives rally against gun violence in Washington, DC on March 24, 2018. / AFP PHOTO / Andrew CABALLERO-REYNOLDS (Photo credit should read ANDREW CABALLERO-REYNOLDS/AFP/Getty Images)
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The ad concludes with the girl recalling how her teacher used to sing a song to help them remember what to do if a shooter entered the building.

"Lockdown, lockdown, let's all hide," she sings. "Lock the doors and stay inside. Crouch on down, don't make a sound."

According to March For Our Lives, 95 percent of U.S. public schools practice active shooter drills.

The organization is urging viewers to support the “Background Check Expansion Act,” introduced in January by Sen. Chris Murphy, D-Conn. The legislation, which would require a background check for every firearm sale, was referred to the Senate Judiciary Committee. It has yet to come up for a vote.

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