Airman 1st Class Steven Hernandez, 28th Operations Support Squadron Airfield Management operations coordinator, performs a spot check on Airman 1st Class Jeffery Reinke, 28th Security Forces Squadron patrolman, at Ellsworth Air Force Base, S.D., July 19, 2013. Spot checks are performed randomly twice a day to ensure that all personnel on the flightline have the proper documentation, training and authorization to be on the flightline. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)