United States military officials said American planes struck at four antiaircraft artillery sites after coming under fire.

Down from the radar site were antenna fields, trailers with technicians peering into scopes and simulated artillery sites.

Then some artillery sites opened fire--but they were sweeping the skies erratically.

The Tiger units then concentrated on attacking the artillery sites and armories.

Several antiaircraft artillery sites opened fire, some very close by but locked onto the decoy gliders, not the Megafortress.

Conducting raids on enemy HQs, artillery sites, missile sites, roads and any other significant key targets.

But officials also said that well-hidden Iraqi artillery sites about to launch such a weapon could possibly avoid detection.

Her main guns lobbed 24 shells on Iraqi artillery sites, missile facilities, and electronic warfare sites along the coast.

They successfully took control of and destroyed the artillery site, escaping with small losses.

In a third incident, two hours after the second, two F-16's encountered fire from an Iraqi antiaircraft artillery site 12 miles north of Mosul.