Runners participate in the Commander's Challenge Run at Joint Base Charleston - Air Base July 13, 2012. The Commander's Challenge is held monthly to test Team Charleston's fitness abilities. (U.S. Air Force photo/Airman 1st Class Ashlee Galloway)

Col. Al Miller, 437th Airlift Wing vice commander, speaks to Airmen during the Commander's Challenge Run at Joint Base Charleston - Air Base July 13, 2012. The Commander's Challenge is held monthly to test Team Charleston's fitness abilities. (U.S. Air Force photo/Airman 1st Class Ashlee Galloway)

Capt. Matt Hellier, 14th Airlift Squadron, 437th Airlift Wing, was the fastest male runner with a time of 12:29 during the 2.37-mile Commander's Challenge Run at Joint Base Charleston - Air Base July 13, 2012. (U.S. Air Force photo/Airman 1st Class Ashlee Galloway)

Capt. Sarah Hadacek, 628th Air Base Wing Judge Advocate office, was the fastest female runner with a time of 17:45 during the 2.37-mile Commander's Challenge Run at Joint Base Charleston - Air Base July 13, 2012. (U.S. Air Force photo/Airman 1st Class Ashlee Galloway)