MACDILL AFB, Fla. --Tech. Sgt. Chris Sterling and Staff Sgt. Sean Tracey, 927th Maintenance Operations Flight, take information from a caller while monitoring maintenance logs on several screens March 3, 2011, at Macdill Air Force Base, Fla. Sterling and Tracey are aircraft production controllers at the Maintenance Operations Conrol Center, which serves as a clearinghouse of information for all issues related to maintenance on the flightline. (U.S. Air Force photo/Staff Sgt. Jennie Chamberlin)