Kentucky National Guardsmen, Spc. Danielle Randolph and Pvt. 1st. Class Adam Watts, both assigned to the 1204th Aviation Support Battalion, perform an aqua glow test to assess sediment and pollution levels in fuel, Aug. 1, during Vibrant Response 14 at Forward Operating Base Nighthawk, Camp Atterbury, Ind. Vibrant Response is a U.S. Northern Command-sponsored field training exercise for chemical, biological, radiological, nuclear and high-yield explosive consequence management forces designed to improve their ability to respond to catastrophic incidents. (U.S. Army photo by Sgt. Dani Salvatore, 27th Public Affairs Detachment)