Back in the day Pan Am almost had the power to make or break an aircraft and certainly their decisions around the DC-8 and 707 were watched by the market. Initially the Douglas product had the upper hand but it wasn't to last, possibly to Pan Am's ultimate detriment:
Pan American Douglas DC-8-30 by rstretton, on Flickr
Pan American Douglas DC-8-30 by rstretton, on Flickr
