Snow covers an HC-130J Combat King II aircraft on the flight line of Moody Air Force Base, Georgia, Jan. 3, 2018. An extreme winter storm brought the first snow the base has seen since 2010. Air Force photo by Andrea Jenkins U.S. Army Reserve Spc. Christopher Landon, a motor transport operator assigned to the 182nd Transportation Company, fires an M240B machine gun as part of Operation Cold Steel II, hosted by the 79th Theater Sustainment Command at Fort Hunter Liggett, California, Dec. 2, 2017. U.S. Army Reserve photo by Sgt. Heather Doppke Special tactics airmen sprint toward an objective at Fort Sill, Oklahoma, Nov. 15, 2017, during Exercise Gunslinger 17. The airmen are assigned to the 24th Special Operations Wing. Air National Guard photo by Senior Airman Tyler Woodward Vapor covers an Air Force F-22 Raptor as its pilot demonstrates the aircraft’s capabilities during an event at Naval Air Station Jacksonville, Florida, Nov. 5, 2017. Air Force photo by Staff Sgt. Eric Summers Jr. A California Air National Guard C-130J Hercules drops fire retardant over the hills above Santa Barbara, California, Dec. 13, 2017, while helping fight the Thomas Fire. The aircraft is assigned to the 146th Airlift Wing. Air National Guard photo by Staff Sgt. Nieko Carzis A sailor walks across the flight deck of the aircraft carrier USS John C. Stennis after being relieved from watch while the ship is port in Bremerton, Washington, Dec. 25, 2017, preparing for its next deployment. Navy photo by Seaman Erika Kugler Soldiers fire the main weapon of an M1A2 Abrams tank during a gunnery qualification event at the Rodriguez live fire complex in South Korea, Nov. 28, 2017. The soldiers are assigned to the 1st Battalion, 8th Cavalry Regiment. Army photo by Sgt. Patrick Eakin A Marine Corps MV-22C Osprey tiltrotor aircraft assigned to Special Purpose Marine Air-Ground Task Force Crisis Response-Africa flies near Asturias, Spain, Sept. 28, 2017. Marine Corps photo by Cpl. Jodson B. Graves Two of Hawaii’s first three AH-1Z Vipers fly near Marine Corps Air Station, Kaneohe Bay, Dec. 19, 2017. Marine Corps Photo by Sgt. Alex Kouns An F/A-18F Super Hornet, assigned to the Mighty Shrikes of VFA-94, an F/A-18E Super Hornet, assigned to the Stingers of VFA-113, and an EA-18G Growler assigned to the Cougars of VAQ-139 fly off the coast of Wake Island during a U.S. Navy Heritage event with the aircraft carrier USS Theodore Roosevelt (CVN 71). U.S. Navy photo by Lt. Aaron B. Hicks