aerial patrol
air patrol

It's something to do with the air patrols the general spoke about.

Beside him, already, there should have been an air patrol.

Others would be at the missile sites or on air patrol.

At least under such cover he could not be tracked by air patrols.

This means that air patrols over northern Iraq have been weakened.

"The air patrol could make a pass and check," said Quinn.

Great depth, however, would be necessary to escape the observation of the air patrol.

You have been ordered by the Air Patrol to return to this field at once.

Time the Air Patrol got to her estimated position it was too late.

I'd probably have an air patrol lurking around as well, just in case we found something and wanted to force it to the surface.