Team Charleston Airmen pace themselves as they near the three-quarter mark of the Commander's Fitness Challenge 5K run on Charleston AFB June 5. More than 350 Airmen from various units participated in the run. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Maj. Jason Pavelschak speaks to Charleston Airmen before the Commander's Fitness Challenge 5K run on Charleston AFB June 5. More than 350 Airmen from various units participated in the challenge. Major Pavelschak is the Deputy Director of Staff for the 437th Airlift Wing. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Team Charleston Airmen pace themselves at the start of the Commander's Fitness Challenge 5K run on Charleston AFB June 5. The Commander's Fitness Challenge is held the first Friday of the month and all Airmen are encouraged to attend. More than 350 Airmen from various units participated in the monthly challenge. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Tech. Sgt. Shawn McKeen announces runtimes as Airmen cross the finish line at the Commander's Fitness Challenge 5K run here June 5. More than 350 Airmen from various units participated in the run. Sergeant McKeen is the fitness NCO in charge for the 437th Force Support Squadron. (U.S. Air Force photo/Senior Airman Timothy Taylor)