Senior Airman Daniel Hawley, an MQ-9 Reaper crew chief with the 49th Aircraft Maintenance Squadron, checks an electronic technical order prior to performing a pre-flight inspection at Holloman Air Force Base, N.M., Oct. 13, 2015. Electronic technical orders are manuals which provide step-by-step instructions for any maintenance required on a particular aircraft. (U.S. Air Force photo by Airman 1st Class Emily A. Kenney/Released)