Multiple choice general knowledge It was a competitor to F-15E Strilke eagle but was eliminated in the flyoff F-16 Block 52 F-16 XL F-111 Aardvark OA-10 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The General Dynamics F-16XL was a derivative of the F-16 featuring a cranked-arrow delta wing. It competed against the McDonnell Douglas F-15E Strike Eagle in the Enhanced Tactical Fighter (ETF) competition in the 1980s but ultimately lost.