Capt. Daniel Groff, 79th Fighter Squadron F-16 Fighting Falcon fighter jet pilot, inspects his jet before launch at Nellis Air Force Base, Nev., Jan 29, 2019. Red Flag focuses on applying the core missions such as: Intelligence Surveillance Reconnaissance, Command and Control, Air and Space Superiority, Strike and Personnel Recovery/Mobility and how they work together to ensure success. (U.S. Air Force photo by Airman 1st Class Bryan Guthrie)