Senegalese Brig. Gen. Joseph Diop, Senegal air force Chief of Staff, speaks during the opening ceremony of African Partnership Flight Senegal at Captain Andalla Cissé Air Base, Senegal, March 19, 2018. The purpose of APF Senegal is to conduct multilateral, military-to-military engagements and security assistance with African air forces. (U.S. Air Force photo by Airman 1st Class Eli Chevalier)