A 66-inch water main broke this AM on River Road in Potomac right near where it goes over 495 (near the golf course and Norwood school). Several cars were stranded and about 12-15 had to be rescued via airlift because the water is rushing so fast down the road. Hope everyone in that area is safe.
you can find streaming video here - it's crazy http://www.wusa9.com/video/live.aspx?storyid=79807&catid=158