Airman 1st Class David Bryant, an Electrical Journeyman with the Electrical and Environmental shop, replaces one of the overflow valves on a KC-135R Stratotanker at Scott AFB, Ill. on June 6, 2011. Airman First Class Bryant is assigned to the 906th Air Refueling Squadron which is associated with the 126th Air Refueling Wing, Illinois Air National Guard. (U.S. Air Force Photo/Airman 1st Class Dustin Clary)