A mile-long hangar roof was to have been laid in tiers to form a stadium for spectators at air and ground demonstrations.

There wasn't any sound on the hangar roof.

A hole was blown in the hangar roof 250 feet above; about 40 windows in the hangar were shattered.

Overhead a grid of enclosed walkways crisscrossed the hangar roof.

Each section was weighted with iron and they tested dropping them from a hangar roof to see how they unfurled.

The hangar roof billowed up from the joists.

Above the hangar roof the top of a brown fountain appeared.

The electronic illusion which made up the hangar roof would not pass air.

They chanted her name so loud it almost took the hangar roof off!

Trainees are taught fight drills while suspended from the hangar roof in parachute harnesses on cables.