1.   Mr. Dorrell Several ambulance services now use helicopters.

2.   Officers used their helicopters when there was a contact, so when we went up, there was almost certainly action.

3.   They had used helicopters to lift the ARVNs to battles they almost always lost.

4.   They used a helicopter to make their survey of the volcano itself.

5.   Helicopters were used to help fight the blaze.

6.   The Afghan air force was using helicopters to supply the besieged town.

7.   A police helicopter was used in the search for the two men who were both white and wearing overalls.

8.   The helicopters will be used to remove casualties among British forces in Bosnia for medical treatment behind the lines.

9.   Among other things, that would allow the Colombians to use helicopters given to them by the United States to attack rebels.