Airmen from the 19th Civil Engineer Squadron secure a bunker at Little Rock Air Force Base, Arkansas, Oct. 18, 2019. In preparation for the upcoming ROCKI exercise, which begins Nov. 4, the 19th CES set up defensive fighting positions and bunkers by the flight line to add to the realism of training during the exercise. (U.S. Air Force photo by Airman 1st Class Mariam K. Springs)