Members of Team Hanscom fill a weather balloon with helium Feb. 27, 2018, as they prepare for their Air Force Research Laboratory Commander’s Challenge demonstration at the Redstone Arsenal in Huntsville, Alabama. Teams from Wright-Patterson, Eglin and Kirtland AFBs joined the Hanscom team in competition to meet the challenge of developing a solution for resupplying isolated troops. (U.S. Air Force photo by R.J. Oriez)