Staff Sgt. Deron Prince, 811th Security Forces Squadron protective services leader, holds his legs six inches above the ground during physical training for the Pre-Raven Training course at Joint Base Andrews, Md., Oct. 17, 2014. The ten day class is hosted by the 811th SFS and requires three to four hours daily of continuous physical training to include running, push-ups, flutter kicks, jumping jacks and over-head arm claps. (U.S. Air Force photo/ Senior Airman Nesha Humes)