U.S. Air Force Senior Airman Cody Rowley, 776th Expeditionary Air Base Squadron radio and satellite communications technician, attempts a high-frequency radio call to another station during Noble Skywave Global HF competition at Chabelley Airfield, Djibouti, Oct 27, 2021. Noble Skywave is a 60-hour event where teams demonstrate their ability to make HF radio transmission around the world. (U.S. Air Force courtesy photo)