McDonnell Douglas RF-4C Phantom airplane model. The F-4E is essentially an F-4D with improved J79-GE-17 engines (900 lbs. more static sea level thrust each) and a M61A1 "Vulcan" 20mm cannon. Operational experience gained in Vietnam had a direct influence on the addition of the cannon. The air-to-air missile fire-to-hit ratios were low and...