U.S. Air Force Airmen assigned to the 317th Airlift Wing prepare to remove ice at Dyess Air Force Base, Texas, from a C-130H Hercules assigned to the Montana Air National Guard in preparation of the U.S. Air Force Weapons School Joint Forcible Entry exercise, Dec. 8, 2018. The exercise takes place at Nellis AFB, Nev. and is designed to be a large-scale air drop and land mobility mission in which participating students plan and execute an air-land operation in a simulated contested battlefield. (U.S. Air Force photo by Airman 1st Class Mercedes Porter)