Firefighters on Sunday battled a wildfire burning in steep, inaccessible terrain in central California, threatening at least 300 homes in or near a gated community, one day after a fast-moving brush fire in San Bernardino burned five homes and injured at least three people. The brush fire broke out in San Bernardino and quickly spread to about 10 acres before firefighters got a handle on the blaze, a spokesman for the San Bernardino County Fire Department said. Four hilltop homes were destroyed -- one had only a swimming pool remaining after being burned to its foundation, county fire Engineer Jeff Allen said.