U.S. Navy Petty Officer 2nd Class D. Lopez performs maintenance on an E-2C Hawkeye in the hangar bay of the aircraft carrier USS Harry S. Truman in the Arabian Gulf, Jan. 21, 2016. Lopez is an aviation structural mechanic assigned to Carrier Airborne Early Warning Squadron 117. U.S. Navy photo by Petty Officer 3rd Class Justin R. Pacheco