The Grumman F7F Tigercat was the U.S. Navy's first twin-engine fighter airframe. Originally, the Tigercat was designed for carrier operations but later became a land based attack or night fighter in the Korean war. Early in production, a second seat was added for the radar operator in the F7F-2N version. The two Pratt&Whitney R-2800-34's developed 2,100 hp each and enabled incredible performance figures of 460 mph(400 knots), a maximum ceiling of 40,400 feet, and a range of 1,200 miles. The F7F could unleash a wall of lead at the enemy with it's four 50 cal.