Ukraine’s Zelensky fires Air Force chief, days after fatal F-16 crash CNNUkrainian president fires air force commander after fatal F-16 crash The Associated PressPresident Zelensky sacks Ukraine air force commander Mykola Oleshchuk BBC.comExclusive: Top Ukrainian pilot killed when US-made F-16 fighter jet crashed CNNU.S.-Made F-16 Crashed in Ukraine, Killing Pilot The Wall Street Journal