11.   Claiming that the craft had engine trouble and wandered into South Korea, North Korea has demanded that Seoul return the craft and crew.

12.   However, the pilot convinced the two that the craft did not have enough fuel for such a flight and landed instead in Port Sudan, SUNA reported.

13.   Such craft have a short life span, often less than a year.

14.   The craft has yet to be flight-tested, but Air Force officials hailed it as the wave of the future.

15.   The ideal survival craft would have enough deck space for two to sleep comfortably.

16.   The surveillance craft would have a strict code of instructions to identify and communicate with other aircraft before trying to force a suspect plane to the ground.

17.   The missing craft has three people on board, including Canadian-born David MacTaggart, a former Greenpeace director who has participated in five previous campaigns on Mururoa.