It is 5 a.m. and the sun has yet to rise on a chilly morning where all that can be heard are the crickets chirping at the Main Fitness Center at Shaw Air Force Base, South Carolina. Inside, however, the clacking and grunts of those pushing their bodies to their limits fills the room as Staff Sgt. Jaquelynn Madsen, 20th Civil Engineer Squadron Airman dorm leader, walks through the front doors.