HOLLOMAN AIR FORCE BASE, N.M. — Airman Steven Kleber, crew chief for 849th Aircraft Maintenance Squadron, listens to the pilot of the MQ-1 Predator performing the pre-launch procedure checklist June 7, 2010. Airman Kleber is responsible for assuring the pilot that all of the aircraftâs functions are operating properly and the aircraft is ready to fly. (U.S. Air Force photo by Senior Airman DeAndre Curtiss / Released)