Members of the Kentucky Air National Guard's 123rd Contingency Response Group offload an all-terrain vehicle at MidAmerica St. Louis Airport in Mascoutah, Ill., on Aug. 5, 2013, as part of Exercise Gateway Relief, a U.S. Transportation Command-directed earthquake-response scenario. The vehicle, which serves as a mobile command post, is equipped with satellite communications gear that allows a Joint Assessment Team to establish secure voice and data communications with USTRANSCOM officials upon landing at a non-functional airfield, reporting the status of facilities and the ability to support relief operations. (U.S. Air National Guard photo by Maj. Dale Greer/Released)