U.S. Air Force Airman 1st Class Caesar Tejeda, 633rd Force Support Squadron career development specialist, explores the weapon systems unit on an AH-64 Apache helicopter during a tour of the 128th Aviation Brigade at Joint Base Langley-Eustis, Va. June 2, 2017. Throughout the tour, the 633rd FSS Airmen were introduced to the different training models provided to the U.S. Army 128th Avn. Bde. Advanced Individual Training students, such as the large-scale helicopter models used for hands-on training. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)