11.   Beginning in late March, Coast Guard crews will use a helicopter to scour the coast for a pod of whales.

12.   A helicopter was used to drive the wild antelope into nets.

13.   A Panyu City government spokesman said the fog made it impossible to use a helicopter to track her.

14.   But foul weather had hampered the effort until Sunday, when the weather cleared enough to use helicopters.

15.   Clinton, on the other hand, is less enthusiastic about a French plan to use American helicopters to fly in reinforcements for U.N. peacekeepers already in Gorazde.

16.   Clinton, on the other hand, is far less enthusiastic about a French plan to use American helicopters to fly in reinforcements for U.N. peacekeepers already in Gorazde.

17.   During their searches of the woods during the past week, agents have used helicopters armed with heat-detecting sensors as well as a pair of bloodhounds.

18.   Early Saturday morning at low tide, police used helicopters to search the mostly dry beds of the Piscataqua River, near Portsmouth, N.H.

19.   Elsewhere in the country, he added, thieves have used helicopters to haul valuable single trees, such as cherry.

20.   For example, few people are aware that the military used helicopters before the Korean War.