A six-alarm fire - the second on this street in three months - ripped through a Redwood City apartment Thursday morning, forcing some residents to use rock climbing gear to escape to safety. No major injuries and no deaths were reported at the Terrace Apartments during the massive blaze first reported from the fourth floor about 5:30 a.m. in the 900 block of Woodside Road, or Highway 84. There were four injuries, though - two moderate and two minor, according to fire officials. There were no sprinklers in the older building. Chase Cain and Bob Redell report.