11.   Senior Pentagon officials said the helicopter was on a routine training mission, and could not explain why the Kiowa flew three to five miles into North Korean territory.

12.   The American pilot was flying a routine NATO monitoring mission when his plane was downed by a Serbian missile near the northern town of Banja Luka.

13.   The crew was flying cross country in a routine training mission.

14.   The fact that Purvis was killed on a routine training mission illustrates the random nature of the crash, he added.

15.   The jet left Miramar Air Station in San Diego for Nashville on Friday on a routine training mission.

16.   The pilot, the first American missing in the war, was on a routine NATO monitoring mission over Bosnia.

17.   The pilot, the first American missing in the war, was on a routine NATO monitoring mission.

18.   The question of why Button broke from his formation and veered off the course of a routine training mission will always haunt the couple, they said.

19.   Wednesday afternoon, Kirk was deployed aboard the aircraft carrier Theodore Roosevelt, headed for what the military described as a routine training mission.

20.   Peruvian officials said the helicopters were on routine missions within Peru.