Senior Airman Levi Hickey, 28th Civil Engineer Squadron fire protection flight driver operator, fills a supportable water bridge with pressurized air at Ellsworth Air Force Base, S.D., Jan. 7, 2016. The SWB can be fully inflated and deployable in a 30-second time span and provides a supportive and reliable surface for emergency responders during rescue missions. (U.S. Air Force photo by Airman Donald C. Knechtel/Released)