Through the years of the Cold War McDonnell Douglas had introduced and manufactured dozens of successful military aircraft, including the F-15 Eagle in 1974, the F/A-18 Hornet in 1978, and other products such as the Harpoon and Tomahawk missiles. The oil crisis of the 1970s was a serious shock to the commercial aviation industry, as a major manufacturer of commercial aircraft at the time, McDonnell Douglas was hit by the economic shift and forced to contract heavily while diversifying into new areas to reduce the impact of potential future downturns.