U.S. Marines scatter as a CH-46 helicopter burns, background, after is was shot down near the demilitarized zone (DMZ) between North and South Vietnam, July 15, 1966. At least 13 Marines were reported killed in the crash, with three more badly burned. (AP Photo/Horst Faas)
A U.S. Marine shows a message written on the back of his flack vest at the Khe Sanh combat base in Vietnam on Feb. 21, 1968 during the Vietnam War. The quote reads, 'Caution: Being a Marine in Khe Sanh may be hazardous to your health.' Khe Sanh has been subject to increased rocket and artillery attacks from the North Vietnamese troops in the area. (AP Photo/Rick Merron)
Moment of Peace: Corporal Larry G. Nabb (Brush, Colorado) finds a moment of peace in front of a gaily decorated Christmas tree at Quang Tri Combat Base. Nabb is serving as a truck driver with 3d Marine Division’s Headquarters Battalion, and is one of thousands of Marines celebrating their Christmas in Vietnam
A U.S. Marine wears a gas mask after rescue workers using a backhoe broke open a stock of tear gas that had been stored in the Embassy, April 19, 1983. Tear gas drifted up through the rubble, causing rescue workers and Marines to cough and sneeze. The Embassy, seen in the background, was severely damaged in a bomb blast yesterday. (AP Photo/Bill Foley)
David Gurfein sits next to a Christmas tree in Saudi Arabia while serving during Operation Desert Shield/Storm.
U.S. Marine Corp Assaultman Kirk Dalrymple watches as a statue of Iraq's President Saddam Hussein falls in central Baghdad in this April 9, 2003 file photo. U.S. troops pulled down a 20-foot (six-metre) high statue of President Saddam Hussein in central Baghdad and Iraqis danced on it in contempt for the man who ruled them with an iron grip for 24 years. In scenes reminiscent of the fall of the Berlin Wall in 1989, Iraqis earlier took a sledgehammer to the marble plinth under the statue of Saddam. REUTERS/Goran Tomasevic/Files (IRAQ - Tags: TPX IMAGES OF THE DAY CONFLICT)
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