That will keep the planes beyond the range of anti-aircraft weapons.

The United States said a plane had come under attack from people on the ground, although no anti-aircraft weapons were found.

Because of its perceived value as an anti-aircraft weapon, the gun was a difficult piece to manufacture.

He screamed at the nearest officer to bring some anti-aircraft weapons to bear.

Although designed as an anti-aircraft weapon, it was also used against ground targets.

One eyewitness saw anti-aircraft weapons used against targets on the ground.

Additional anti-aircraft weapons were installed to better fight off aerial attack.

It quickly proved to be the best anti-aircraft weapon then available.

This was a development of the 1939 class, with bigger engines and more anti-aircraft weapons.

The crew opens fire with their anti-aircraft weapons as the planes appear.