One of them went Motion after the unarmed Bearing_arms EF-111 .

An F-15C on the same flight , piloted Motion by Robert Graeter , went after the Mirage to protect Preventing_or_letting the EF-111 .

An unarmed EF-111 had thus scored an air-air victory against a Dassault Mirage F1 , although Graeter was credited with a kill .