A San Francisco Fire Department rescue boat flipped over in the Pacific Ocean on Saturday during a training exercise, sending seven firefighters into the chilly waters before all were rescued.
Coast Guard or fire department crews rescued five of the firefighters. Private vessels nearby picked up the other two. Medical personnel checked all of them as a precaution, but none appeared to have serious injuries, according to NBC Bay Area.
What caused the 30-foot boat to flip was unclear, although officials suspected a rogue wave.
A spokesman for the National Weather Service said the closest buoy to where the boat rolled was measuring waves of roughly seven feet and wind gusts as high as 26 mph.