At an altitude of about 23.3 km (14.5 miles) the body exploded in an air burst.

Attempting to flee might put him right under the air burst of a neutron bomb.

An air burst would have been used against a large area, soft target.

After an air burst, wait a few minutes then go help to fight fires.

"There was that air burst, way back in the strait."

Two air bursts followed in quick succession, one on either side of the bridge.

"The results aren't the same with an air burst?"

When the blast wave from an air burst reaches the ground it is reflected.

"I knew what a nuclear detonation, an air burst, would do over the center of Manhattan," he said.

Not an air burst, an underground or something like it.