Senior Airman Rebekah McWilliams, 442nd Logistics Readiness Squadron, rehydrates while in mission-oriented-protection-posture four during an operational readiness exercise at Whiteman Air Force Base, Mo., May 15. The 442nd LRS is part of the 442nd Fighter Wing, an Air Force Reserve Command A-10 Thunderbolt II unit. (U.S. Air Force photo/Staff Sgt. Bill Huntington)