Airman 1st Class Aaron Caldwell, an Advanced Integrated Avionics Systems journeyman with the 69th Maintenance Squadron, reaches for a speed hand tool from his tool box in order to begin some routine maintenance work on a Block 40 RQ-4 Global Hawk inside a hangar on Grand Forks Air Force Base, N.D., Feb. 5, 2015. Aircraft maintainers such as Caldwell became familiarized with hundreds of special tools used to work on aircraft. The 24-year-old native from Independence, Mo., was named the Grand Forks AFB Warrior of the Week for the second week of February 2015. (U.S. Air Force photo/Staff Sgt. Luis Loza Gutierrez)
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