NELLIS AIR FORCE BASE, Nev. -- Workers installed carpet on one of the new mezzanine floors at the Combined Air and Space Operations Center-Nellis. The facility, which supports U.S. Air Force Warfare Center and Headquarters Air Combat Command exercises, took 30 days to construct two new floors that will nearly double capacity. The facility is run by the 505th Operations Squadron, part of the 505th Command and Control Wing headquartered at Hurlburt Field, Fla. The CAOC-N is scheduled to particpate in Red Flag Oct. 5. (Air Force photo/Master Sgt. Jeffrey Hernquist)