A fire that scorched nearly 500 acres at California's Vandenberg Air Force Base was almost 90 percent contained, authorities said on Thursday. Crews hoped to have the blaze fully contained by 6 p.m. local time, Staff Sgt. Scottie McCord said. No injuries were reported and no structures were threatened or burned, officials said.

Evacuation orders were lifted, but all non-essential employees were told not to report for work on the Santa Barbara County military installation 60 miles northwest of Los Angeles. Power was restored to base homes after being shut off as a precaution, but was still not on in some base buildings, KSBY-TV, San Luis Obispo, California, reported. The fire, which the U.S. Air Force said was sparked Wednesday by a blown transformer near the base's main gate on Highway 1, did not affect the base's mission capabilities, officials said. Vandenberg is responsible for satellite launches for military and commercial organizations, as well as testing of intercontinental ballistic missiles, including the Minuteman III ICBMs. The blaze originally burned out of control, fanned by 50 mph winds. About 20 fire engines, 10 water-dropping air tankers, including a DC-10 jumbo jet, and five helicopters worked to put out the fire Wednesday.