1.   From time to time a helicopter flew by, but mostly the sky remained clear.

2.   Helicopters will fly overhead, and police robots will be available to handle suspicious packages that might contain explosives.

3.   Next, a police helicopter flies over the crowd.

4.   She was flown by helicopter to hospital in Orlando.

5.   The helicopter flew round and round above us.

6.   You either patrolled an area close by or you were flown by helicopter to the more remote places.

7.   Helicopters fly in appalling weather to succour shipwrecked mariners.

8.   He was flown by helicopter to the Royal London Hospital, in Whitechapel, east London, where he underwent emergency surgery.

9.   He was flown by helicopter to the Royal London Hospital, Whitechapel, east London, where surgeons ruled out emergency surgery after initial investigations.

10.   The UN rescue operation had begun soon after dawn when three French Puma helicopters flew into Srebrenica from the north-east Bosnian Muslim stronghold of Tuzla.