Cost of broken windows along the Wasatch Front from a sonic boom last week could total $4,000 to $5,000, officials at Hill Air Force Base said.

Although the F-111 jet fighter-bomber that created the sonic boom is not based at Hill, officials there said residents are calling the base to complain and asking for damage claim forms.The jet was flying from Nellis AFB, Nev., to Mountain Home AFB, outside Boise, shortly after 1 p.m. last Friday and passed over the Salt Lake Valley, rattling and breaking windows in Salt Lake and Davis counties.

Hill spokesman Len Barry said based on the calls received, most of the damage appears to be in the West Jordan area. Damage reported so far is to residential windows and glass, Barry said, with the biggest reported being a window 8 feet by 12 feet.

About 20 calls have been logged, Barry said.

The jet was flying at 45,000 feet when the sonic boom rolled through the valley. It's effect was amplified by overcast conditions, with the cloud cover concentrating the pressure wave at ground level instead of allowing it to dissipate, Air Force officials said.