Airports Authority chief Winston Suite said the bizarre death Sunday night was an apparent suicide.
Police said Daniel John O'Brien, 31, of Roselle, Ill., scaled an airport wall in the nude, attacked four security guards and stole their four-wheel-drive vehicle.
He drove the jeep onto the tarmac to a British Airways 747 that was readying for takeoff, smashing the vehicle’s top. Guards said O'Brien scrambled out of the wreckage, smeared grease on his bleeding shoulder, then ran back to the jetliner and threw himself into the engine.