VANDENBERG AIR FORCE BASE, Calif. — The Air Force said it successfully launched an unarmed Minuteman 3 intercontinental ballistic missile from a California base, firing it to targets in the Pacific Ocean.

Lt. Raymond Geoffroy said the ICBM was launched from Vandenberg Air Force Base at 3:01 a.m. today.

He said it carried three unarmed re-entry vehicles that hit their targets near the Kwajalein Atoll in the Marshall Islands, some 4,200 miles away.

On clear mornings, missile launchings from Vandenberg can be seen as far away as Los Angeles, 140 miles to the southeast, but fog along the coast made today's launch difficult to see even in the immediate area, Geoffroy said.

The Air Force said the launch was an operational test to check the weapon system's reliability and accuracy.

Test data will be used by United States Strategic Command planners and Department of Energy laboratories.