text:  Several homes were evacuated Thursday morning due to a gas leak in Montgomery County. Gas company crews, along with firefighters, responded to the 12,600 block of Orchard Brook Terrace in Potomac after work crews struck a high-pressure gas line. Homes in the area were evacuated as a precaution. Residents were allowed back into their homes after the gas company checked all of the affected residences. I'm Kevin McManus, WFMD News.