LANGLEY AIR FORCE BASE, Va. -- Staff Sgt. Carlos Gonzales, an F-22A Raptor weapons load team member with the 27th Aircraft Maintenance Unit, does a forward squat thrust during his CrossFit workout April 30. CrossFit is an exercise program that encompasses the entire body. CrossFit is the principle strength and conditioning program for many police academies, military special operations units and hundreds of professional athletes worldwide. (U.S. Air Force photo/Staff Sgt. Samuel Rogers)