Warrior of the Week: A1C Aaron Caldwell
Airman 1st Class Aaron Caldwell, an Advanced Integrated Avionics Systems journeyman with the 69th Maintenance Squadron, positions a Halon fire extinguisher next to a Block 40 RQ-4 Global Hawk inside a hangar on Grand Forks Air Force Base, N.D., Feb. 5, 2015. Halon is a liquefied, compressed gas that stops the spread of fire by chemically disrupting combustion. As a safety precaution, Halon extinguishers are positioned in close proximity to the stationary aircraft in case of a fire emergency. (U.S. Air Force photo/Staff Sgt. Luis Loza Gutierrez)