A P-51 Mustang airplane piloted by Jimmy Leeward plunges toward spectators Sept. 16 at the National Championship Air Races. The plane had climbed, rolled and then abruptly plunged nose-first into spectators. Eleven people were killed and more than 70 hurt. (Associated Press)

A P-51 Mustang airplane piloted by Jimmy Leeward plunges toward spectators Sept. 16 at the National Championship Air Races. The plane had climbed, rolled and then abruptly plunged nose-first into spectators. Eleven people were killed and more than 70 hurt. (Associated Press)