U.S. soldiers fire their weapons from cover while assaulting a mock enemy town after an air assault mission as part of Operation Intrepid Centurion near Camp Buehring, Kuwait, Feb. 19, 2014. National Guard photo by U.S. Army Sgt. Harley Jelis

U.S. soldiers assault a mock enemy town after an air assault mission as part of Operation Intrepid Centurion near Camp Buehring, Kuwait, Feb. 19, 2014. National Guard photo by U.S. Army Sgt. Harley Jelis

A UH-60 Black Hawk helicopter provides aviation support for an air assault mission as part of Operation Intrepid Centurion near Camp Buehring, Kuwait, Feb. 19, 2014. National Guard photo by U.S. Army Sgt. Harley Jelis

U.S. Army medics provide medical aid to U.S. Army Pfc. Pomeroy, center, as part of an air medical evacuation exercise during Operation Intrepid Centurion near Camp Buehring, Kuwait, Feb. 19, 2014. The medics and Pomeroy, an infantryman, are assigned to 4th Infantry Division's 67th Armored Regiment, 2nd Brigade. National Guard photo by U.S. Army Sgt. Harley Jelis

Navy Petty Officer 3rd Class Paul Osis performs underwater kettlebell walks to increase lung power and endurance at Scott Pool on Joint Base Pearl Harbor-Hickam, Hawaii, Feb. 27, 2014. Osis is a search and rescue swimmer assigned to the USS O'Kane. U.S. Navy photo by Petty Officer 3rd Class Johans Chavarro

U.S. Army Sgt. Harry May holds his son, Tucker, for the first time in Wilmington, Del., Feb. 26, 2014, since he deployed with the 198th Expeditionary Signal Battalion last year. U.S. Army National Guard photo by Staff Sgt. Wendy McDougall

Soldiers climb Smugglers' Notch during a mountaineering exercise in Cambridge, Vt., Feb. 20, 2014. National Guard photo by U.S. Air Force Staff Sgt. Sarah Mattison

A U.S. soldier provides security while others off load from a UH-60 Black Hawk helicopter during an air assault mission as part of Operation Intrepid Centurion near Camp Buehring, Kuwait, Feb. 19, 2014. National Guard photo by U.S. Army Sgt. Harley Jelis