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.