There was concern that the trio had been planning an airborne terrorist attack.

Plus, he can dive through the ground when he uses his airborne attack.

This was in anticipation of an airborne German attack.

All of it defense in depth against an airborne attack.

Tell him to expect an airborne attack at any minute.

These radar outposts were needed to provide warning of airborne Soviet nuclear attack.

It would be one of the war's biggest airborne attacks.

Air space was also regulated - all in an effort to prevent anything from gunfire to bombs to an airborne attack.

An airborne attack might be preceded by 25 minutes' warning.

Still, other officials said the incident had raised fresh questions about the ability of the Government to protect the President from an airborne attack.