11.   A helicopter search over an area of about four square miles was called off until daybreak.

12.   A helicopter search was made two days later after he failed to sign a register to show that he had completed his hike.

13.   A helicopter search failed to find any trace of them.

14.   As a precaution, they sealed off the area and planned a helicopter search for the shells Saturday.

15.   Darkness fell within an hour of the blast, hampering a helicopter search for the getaway car.

16.   He has also paid for helicopter searches of the area around Negril and last week hired two private investigators.

17.   Helicopter searches ended because of heavy fog.

18.   McCormick said her helmet, lifejacket and a single shoe were recovered during a helicopter search of the river.

19.   Repeated helicopter searches and several dives found no sign of the sailor.

20.   The operations include fighter aircraft in combat simulations, a helicopter search and rescue mission, and re-supply exercises by transport planes, the daily said.