Character mistake: When Murphy shoots down an F-16, the guy says "we just lost a M-16."
Character mistake: Following Lymangood's death, police dispatch radios a BOLO on Murphy, identifying his vehicle as a 1979 Trans Am. However Murphy drives a Turbo Trans Am, only available in 1980 and 1981. Dispatch should have all of his data available.
Chosen answer: Murphy has been deemed a threat to the public at large by the authorities, having "snapped" and stolen an armed helicopter. Cochrane is using that determination as cover to finally kill Murphy, whom he's long despised. Killing Murphy on the ground would be harder to get away with. He would not be responsible for paying for the helicopter anymore than the Air Force or the other police helicopter crews would be had they sucessfully knocked Blue Thunder down.
johnrosa