FILE- In this July 21, 2015, file photo, Vice President Joe Biden speaks during a roundtable discussion at the Advanced Manufacturing Center at Community College of Denver. Biden's associates have resumed discussions about a 2016 presidential run after largely shelving such deliberations during his son's illness and following his death earlier this year. (AP Photo/Brennan Linsley, File)
Democratic politician Joseph R. Biden Jr, the United States Senator from Delaware, circa 1980. He became the US Vice President in 2009 under President Barack Obama. (Photo by Nancy Shia/Archive Photos/Getty Images)
WASHINGTON, : US Senator Joe Biden(D-DE) briefs reporters prior to the 15 January start of the second day of the US Senate impeachment trial of US President Bill Clinton on Capitol Hill in Washington, DC. House prosecutors will summarize their case against the president 15 January. (ELECTRONIC IMAGE) AFP PHOTO/Luke FRAZZA (Photo credit should read LUKE FRAZZA/AFP/Getty Images)
392389 02: U.S. President George W. Bush meets with members of the Senate and House foreign policy leadership in the Cabinet room at the White House July 25, 2001 in Washington, DC. Seated next to the president is Sen. Joe Biden (D-DE). (Photo by Mark Wilson/Getty Images)
UNITED STATES - MARCH 08: Joe Biden during the 2004 Democratic National Convention in Boston, Massachusetts. (Photo By Douglas Graham/Roll Call/Getty Images)
UNITED STATES - MAY 12: Democrat vice chairman of the Senate Foreign Relations Committee Senator Joe Biden (D-DE), throws up his hands as he speaks during debate on the nomination of John Bolton as US Ambassador the the United Nations May 12, 2005 in Washington D.C. (Photo by Joe Marquette/Bloomberg via Getty Images)
WASHINGTON - JULY 12: U.S. Senator Joseph Biden (D-DE) speaks during the Senate Foreign Relations Committee hearing on 'North American Cooperation on the Border' on the Border' on Capitol Hill July 12, 2005 in Washington, DC. The committee discussed border security and how to work together to secure the borders with Mexico and Canada. (Photo by Joe Raedle/Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 3331 -- Pictured: (l-r) Senator Joe Biden during an interview with host Jay Leno on March 22, 2007 (Photo by Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
ORANGEBURG, SC - APRIL 26: (L-R) U.S. Sen. Joe Biden (D-DE) and New Mexico Gov. Bill Richardson greet the crowd before the start of the first debate of the 2008 presidential campaign April 26, 2007 at South Carolina State University in Orangeburg, South Carolina. The debate, featuring eight Democratic presidential candidates, comes 263 days before the first ballot will be cast in the Iowa caucus next January. (Photo by Justin Sullivan/Getty Images)
Vice President Joe Biden reacts as he enters the auditorium before speaking about the economy and the Obama administration's policies, Thursday, Feb. 12, 2015, at Drake University in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
Vice President Joe Biden speaks about the economy and the Obama administration's policies, Thursday, Feb. 12, 2015, at Drake University in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
Vice President Joe Biden smiles after being given a shirt by Drake Student Body President Joey Gale after speaking about the economy and the Obama administration's policies, Thursday, Feb. 12, 2015, at Drake University in Des Moines, Iowa. (AP Photo/Charlie Neibergall)
Vice President Joe Biden gestures as he makes a joke during a speech to mark the 40th anniversary of the Legal Services Corporation, on Tuesday, Sept. 16, 2014, in Washington. (AP Photo/Evan Vucci)
Former federal judge and former Rep. Abner Mikva, D-Ill, right, introduces Vice President Joe Biden to speak during a luncheon to mark the 40th anniversary of the Legal Services Corporation, on Tuesday, Sept. 16, 2014, in Washington. (AP Photo/Evan Vucci)
FILE - In this Sept. 9, 2012 file photo, Vice President Joe Biden visits with patrons over lunch at Cruisers Diner in Seaman, Ohio. Biden buddied up with bikers, posed for countless pictures at a pizza place. Obama goes airborne in a doozie of a bear hug with a pizza guy in Florida. Joe Biden cozies up with a biker chick in Ohio. Even the more reserved Mitt Romney seems to be loosening up some with people he meets on the campaign trail. Kissing babies and slapping backs are so yesterday. The 2012 candidates are putting their all into the campaign cliche of pressing the flesh. (AP Photo/Carolyn Kaster, File)
WASHINGTON, DC - JANUARY 23: U.S. Vice President Joe Biden (C) talks with mayors from across the country, including Milwaukee Mayor Tom Barrett, in the Roosevelt Room of teh White January 23, 2014 in Washington, DC. The U.S. Conference of Mayors is holding its annual conference in Washington this week. (Photo by Chip Somodevilla/Getty Images)
In this Sept. 8, 2012, photo, Vice President Joe Biden exits Cardo's Pizza Restaurant with pizza in hand after greeting patrons in Jackson, Ohio. Biden buddied up with bikers, posed for countless pictures at a pizza place and downed an ice cream cone at a Dairy Queen over the weekend as he toured Ohio. Biden loves Ohio. The only question now is whether Ohio loves him _ and President Barack Obama. (AP Photo/Carolyn Kaster)
Vice President Joe Biden gestures during a speech to mark the 40th anniversary of the Legal Services Corporation, on Tuesday, Sept. 16, 2014, in Washington. (AP Photo/Evan Vucci)
Vice President Joe Biden addresses the American Jewish Joint Distribution Committee Centennial Celebration luncheon in Washington, Tuesday, Dec. 10, 2013. (AP Photo/Cliff Owen)
US Vice President Joe Biden speaks during the Civil Society Forum on the sideline of the US-Africa Leaders Summit in Washington, DC, on August 4, 2014. Washington aims to wake up US business to the opportunities in Africa with the landmark US-Africa Leaders Summit this week, as China and Europe steal a march on the world's fastest-growing continent. As many as four dozen African leaders, and hundreds of businessmen with them, will for their part be looking to see if US investors and traders can move beyond old stereotypes of a continent mired in conflict and corruption and recognize its huge potential. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
WASHINGTON, DC - AUGUST 18: U.S. Vice President Joe Biden (R) swears in Secretary of Housing and Urban Development Julian Castro (L) as his wife Erica and daughter Carina look on during a ceremonial swearing in ceremony in the Eisenhower Executive Office Building August 18, 2014 in Washington, DC. Castro, the former Mayor of San Antonio, Texas, was officially sworn in on July 28. (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - JUNE 30: (AFP OUT) U.S. President Barack Obama (C), Robert McDonald (R) and Vice President Joe Biden walk back to the White House through LaFayette Park after President Obama announced his intention to nominate Robert McDonald to lead the Department of Veterans Affairs June 30, 2014 in Washington, DC. McDonald served as the chief executive of Procter & Gamble and will replace Eric Shinseki who resigned after allegations of delayed care came to light. (Photo by Dennis Brack-Pool/Getty Images)
US President Barack Obama speaks to US Vice President Joe Biden after Biden introduced him during a signing ceremony for H.R. 803, the Workforce Innovation and Opportunity Act, on July 22, 2014 in the South Court Auditorium of the Eisenhower Executive Office Building, next to the White House in Washington, DC. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
US Presidential Barack Obama speaks on immigration reform beside US Vice President Joe Biden (R) in the Rose Garden of the White House on June 30, 2014 in Washington, DC. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
COLORADO SPRINGS, CO - MAY 28: Vice President of the United States Joe Biden takes a selfie after the commencement ceremony at Air Force Academy in Colorado Spring, May 28, 2014. Biden spoke during the ceremony. (Photo by RJ Sangosti/The Denver Post via Getty Images)
US Vice President Joe Biden gestures as he speaks at Ledra palace in the UN-patrolled Buffer Zone in Nicosia on May 22, 2014. Biden met Cyprus leaders Thursday to spur talks on ending the island's 40-year division and seek support for threatened sanctions against Russia despite the economic cost. AFP PHOTO/ ANDREW CABALLERO-REYNOLDS (Photo credit should read Andrew Caballero-Reynolds/AFP/Getty Images)
US Vice President Joe Biden adresses a speech to students and officials at Cotroceni Palace, the Romanian Presidency headquarters in Bucharest on May 21, 2014. Tougher sanctions must be imposed on Russia if it undermines crucial presidential elections in Ukraine on May 25, 2014, US Vice President Joe Biden said in Bucharest. AFP PHOTO DANIEL MIHAILESCU (Photo credit should read DANIEL MIHAILESCU/AFP/Getty Images)
WASHINGTON, DC - APRIL 29: U.S Vice President Joe Biden speaks during an event on protecting students from sexual assault at the Eisenhower Executive Office Building April 29, 2014 in Washington, DC. During the event, Biden announced the release of the first report of the White House Task Force to Protect Students from Sexual Assault. (Photo by Win McNamee/Getty Images)
US Vice President Joe Biden (L) and outgoing Heath and Human Services Secretary Kathleen Sebelius applaud as President Barack Obama names Sylvia Mathews Burwell (R), his current budget director, to replace Sebelius in the Rose Garden at the White House in Washington,DC on April 11, 2014. Sebelius resigned, paying the price for the chaotic initial rollout of the US president's signature health care law. AFP PHOTO/Nicholas KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
US Vice President Joe Biden waves upon arrival for a meeting with Lithuania's President in Vilnius on March 19, 2014. Biden meets today with Lithuanian President Dalia Grybauskaite and Latvian leader as part of a tour to reassure NATO allies during the Ukraine crisis. AFP PHOTO / PETRAS MALUKAS (Photo credit should read PETRAS MALUKAS/AFP/Getty Images)
US Vice President Joe Biden listens during a meeting with the Polish Prime Minister in Warsaw, Poland on March 18, 2013. Biden arrived in Poland for talks with regional allies as Russia tightened its grip on the Ukraine's breakaway region of Crimea. AFP PHOTO / JANEK SKARZYNSKI (Photo credit should read JANEK SKARZYNSKI/AFP/Getty Images)
US Vice President Joe Biden arrives for a St. Patrick's Day reception in the East Room of the White House on March 14, 2014 in Washington. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
US Vice President Joe Biden during a joint press conference with Chile's President Sebastian Pinera (not framed) at La Moneda presidential palace in Santiago, on March 10, 2014. AFP PHOTO/CLAUDIO REYES (Photo credit should read Claudio Reyes/AFP/Getty Images)
WASHINGTON, DC - FEBRUARY 27: U.S. Vice President Joe Biden delivers remarks during the Democratic National Committee's Winter Meeting at the Capitol Hilton February 27, 2014 in Washington, DC. Biden addressed the Association of State Democratic Chairs. (Photo by Chip Somodevilla/Getty Images)
THE VIEW - Joe Biden, the 47th Vice President of the United States, was the special guest, live, TUESDAY, FEBRUARY 25 (11:00 a.m.-12:00 noon, ET). The Vice President discussed the Affordable Care Act and the importance of signing up for health insurance through the marketplace before the March 31 deadline. Vice President Biden sat down with The View hosts Barbara Walters, Whoopi Goldberg, Sherri Shepherd and Jenny McCarthy as part of the shows continuing Red, White & View campaign, which is committed to political guests and discussions. 'The View' airs Monday-Friday (11:00 am-12:00 pm, ET) on the ABC Television Network.
(Photo by Lou Rocco/ABC via Getty Images)
SHERRI SHEPHERD, BARBARA WALTERS, VICE PRESIDENT JOE BIDEN, WHOOPI GOLDBERG, JENNY MCCARTHY
U.S. Vice President Joe Biden, left, looks on as President Barack Obama speaks at the White House in Washington, D.C., U.S., on Friday, Jan. 31, 2014. Obama is meeting today with chief executive officers of companies from Bank of America Corp. to EBay Inc. who have committed to giving the long-term unemployed a better chance in the hiring process. Photographer: Joshua Roberts/Bloomberg via Getty Images *** Barack Obama; Joe Biden
US Vice President Joe Biden gives two thumbs-up prior to US President Barack Obama delivering the State of the Union address before a joint session of Congress on January 28, 2014 at the US Capitol in Washington. AFP PHOTO/Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
In this Sept. 9, 2012, photo, Vice President Joe Biden shakes hands and takes photos with people in the audience at a campaign event at Milford High School in Milford, Ohio. Biden buddied up with bikers, posed for countless pictures at a pizza place and downed an ice cream cone at a Dairy Queen over the weekend as he toured Ohio. Biden loves Ohio. The only question now is whether Ohio loves him _ and President Barack Obama. (AP Photo/Carolyn Kaster)
BACK TO SLIDE
By DAVID SHARP
KITTERY, Maine (AP) - Vice President Joe Biden on Wednesday said America will follow the terrorists who posted videos showing the beheading of two journalists "to the gates of hell."
Speaking at the Portsmouth Naval Shipyard, Biden said the Islamic State militant group responsible for beheading James Foley and Steven Sotloff won't intimidate the United States.
"The American people are so much stronger, so much more resolved than any enemy can fully understand," Biden said. "As a nation, we're united. And when people harm Americans, we don't retreat, we don't forget."
A videotape showing Sotloff's murder was broadcast Tuesday, two weeks after the same group released a video showing Foley's killing. Foley was from New Hampshire and Sotloff attended school there, bringing their killings close to home at the shipyard situated on an island in a river that runs between Maine and New Hampshire.
"We take care of those who are grieving and when that's finished, they should know we will follow them to the gates of hell until they are brought to justice," Biden said. "Because hell is where they'll reside."
Biden's used "gates of hell" before, invoking it in an October 2012 vice presidential debate when talking about the killing of Osama bin Laden.
The vice president visited the shipyard to see the results of an agreement between labor and management that promotes collaboration and efficiency.
"This is what industry should do across the board," Biden said while visiting with workers in a training area that included a full-size mock-up of part of a hull from a Los Angeles-class submarine.
Joining Biden at the shipyard were Sen. Jeanne Shaheen and Rep. Carol Shea-Porter of New Hampshire, along with Reps. Chellie Pingree and Mike Michaud of Maine. Shaheen, Shea-Porter and Pingree are up for re-election. Michaud is running for governor in Maine.
Biden is a potential 2016 Democratic candidate for president and trips to the shipyard have become a popular stop for those seeking their party's nomination.
After the shipyard visit, Biden and Shea-Porter made an unannounced visit to the Old Ferry Landing restaurant in nearby Portsmouth, New Hampshire, startling lunchgoers, who broke into applause. He snagged a young woman's cellphone and took a picture with her, then kissed a baby. The two later had ice cream, and posed for more photos.
The 214-year-old Navy yard that repairs and overhauls nuclear submarines in Kittery, Maine, has survived three reviews from the Base Closure and Realignment Commission, including the most recent in 2005. The Defense Department has pressed for another round but has been rebuffed by Congress.
Shaheen said the congressional delegation will stand in the way of any attempts to shut down the facility, which employs about 6,000 people and which she described as an economic engine for Maine and New Hampshire.
Paul O'Connor, a union leader who invited the vice president to visit the shipyard, said he was glad Biden came to see innovations that he said could be carried through other parts of the government.
"We've given the vice president a glimpse of what's going on at the shipyard. We just scratched the surface," he said.