This development led to the need for armed helicopters.

The air force has some 1,900 combat aircraft, including armed helicopters.

North of the highway, near the roadblock, the large, armored, and perhaps armed helicopter stands in open land.

The Air force 14,000 personnel had 192 combat aircraft and 72 armed helicopters.

The board recommended an airmobile division supported by 90 armed helicopters.

I've never seen the use of armed helicopters, but that too was impressive.

After the war in Vietnam, the role of armed helicopters as tank destroyers received new emphasis.

So it is, too, with other crucial measures - of artillery, for instance, and armed helicopters.

At least two armed helicopters were involved in the attack.

He said there was "intense foot patrolling and surveillance from the air by armed helicopters."