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The F/A-18 Hornet, produced by McDonnell Douglas/Boeing, was introuced on January 7th, 1983.
McDonnell Douglas made the F-18 originally. Now Boeing.
McDonnell Douglas F/A-18 Hornet Top speed is 1,190 mph (Mach 1.8).
there is no difference unless you are referring to the Northrop Grumman F-18L and the McDonnell Douglas F/A-18
McDonnell Douglas originally did, now it is Boeing.