Spangdahlem Air Base, Nov. 24, 2003: Carol Malackowski, wife of Lt. Col. Patrick Malackowski, waves her husband in as he pilots his A-10 Thunderbolt II to a Spangdahlem Air Base hangar.

A snowboarder kicks up a curtain of snow as he comes down the Tiefenbach glacier at Sölden, Austria, on Oct. 1, 2003.

Frankfurt, Germany, May 5, 1993: Jazz legend Wynton Marsalis plays at the Alte Oper, one of the first stops of his 1993 European tour.

A pair of young sledders kick up snow as they try to come to a stop on the slopes of Grindelwald, Switzerland, on Jan. 2, 2002.

Kirkuk, Iraq, May 5, 2003: Air Force Master Sgt. Daniel Wear, Staff Sgt. Chip Davidson, and Staff Sgt. Brian Curtis, left to right, hoist a strand of concertina wire to help secure a living area.

When President Jimmy Carter commuted the prison sentences of the four Puerto Rican nationalists who attacked members of Congress and President Harry S. Truman in the 1950s, he cited “humane considerations.”

Baghdad, Iraq, April 8, 2003: A Marine mans a M-240G machine gun on the outskirts of Baghdad, Iraq, as smoke from a burning building billows by.

Hohenfels, Germany, April 11, 2016: Soldiers from the 173rd Airborne Brigade and Italian troops get set to jump out of a C-17 above Hohenfels, Germany, as part of exercise Saber Junction.