“Airborne!” 2019 JCSE Mustang Challenge
A U.S. Army Reserve Joint Communications Support Element (JCSE) soldier tests a Joint Building Blocks satellite during the 2019 JCSE Mustang Challenge at MacDill Air Force Base, Fla., Sept. 7, 2019. The primary job of JCSE soldiers to is provide a secure communications network in austere environments, the Mustang Challenge tested teams to work together in building the network efficiently. (U.S. Air Force photo by Airman 1st Class Ryan C. Grossklag)