11.   Bitros said that his wife made a habit of buckling her belt, and speculated that she had not had time to buckle when the crash occurred.

12.   A rudder malfunction is suspected, but early indications are that this crash did not occur in similar circumstances.

13.   But crashes do occur.

14.   But if an aircraft is already too close to the ground to overcome the downward blast of the micro burst, a crash can occur.

15.   But then the crash occurred and set up a new race for the yellow jersey.

16.   Central Command said the crash occurred when the plan was approaching its final destination at a base in Shamsi, Pakistan.

17.   Cmdr. Jack Papp, a spokesman at the Pensacola Naval Air Station, said the Blue Angels had just arrived in Valdosta when the crash occurred.

18.   Crashes regularly occur.

19.   Crashes have occurred on this observation deck.

20.   Fighter jets had already been circling the skies over Kennedy Airport before the crash occurred, officials said, and continued their patrols in the wake of the accident.