Preparing for a jump
U.S. Air Force Senior Airman Kyle Coughlin, Master Sgt. David Brown and Master Sgt. Samuel Louie, 820th Base Defense Group, monitor a pibal balloon to ensure the sky is clear for 1,500 feet above the drop zone at Moody Air Force Base, Ga., March 21, 2012. To ensure safety, the unit checks visibility and wind speed prior to each parachute training jump.(U.S. Air force photos by Staff Sgt. Stephanie Mancha/Released)