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.

Richard Cavazos, Bruno Orig, Wataru Nakamura, Fred McGee and Charles Johnson were posthumously awarded the Medal of Honor for their actions during the Korean War. Their heroics were not fully recognized at the time, and they received the Medal of Honor as part of a campaign to shine a light on the role of minority service members in defense of the United States.

Capt. Hugh Nelson Jr. and Kenneth David, who fought in the Vietnam War, are the latest recipients of the Medal of Honor, the nation’s highest military award for valor in combat.

Five Korean War soldiers whose extraordinary heroism was not fully recognized at the time will be posthumously awarded the Medal of Honor as part of a campaign to shine a light on the role of minority service members in defense of the nation.

USS Kitty Hawk, off the coast of Japan, Pacific Ocean, April 15, 2002: Petty Officer 2nd Class Jack Lazenby, an air traffic controller, updates flight information on a board in the USS Kitty Hawk’s air traffic control center.

The disaster at Canada’s Chalk River site left an extremely high amount of radioactivity in the reactor facility. In repairing the site, Jimmy Carter’s crew and their Canadian counterparts got high doses of radiation, but helped avert further disaster.

Spc. Devel Brook of the 771st Maintenance Company directs a Humvee onto the Northern Lights, a civilian ship docked in Shu’aibah Port, Kuwait, on Jan. 28, 2004.

Baghdad, Iraq, Jan. 17, 2004: Gigantic crossed sabers, held by giant hands representing the hands of former Iraqi leader Saddam Hussein, split the sky at sunset Saturday in Baghdad.

Ginowan, Okinawa, Japan, Dec. 26, 2007: Yuka Tatetsu, one of the six Mikos, or shrine attendants at the Futenma Shrine in Ginowan, near Camp Foster, makes one last check of sample charms and talismans displayed at the shrine office.

Baghdad, Iraq, June 19, 2003: Kid Rock plays for the soldiers at the first USO show at Baghdad airport.

Kabul, Afghanistan, Jan. 29, 2018: Light from a bakery fills the darkness on Monday, Jan. 29, 2018, one of the few snowy days in Kabul during the Afghan winter of 2017-2018.

Maastricht, Netherlands, Dec. 14, 2007: Frosty greets visitors to the Maastricht Christmas market.

Shegal district, Afghanistan, Feb. 22, 2012: First Lt. Andrew Ferrara, a 23-year-old platoon leader from Torrance, Calif., talks with locals during a patrol of the main bazaar in Shegal district, Kunar province.