Two police officers go through fire to rescue a man trapped in a burning car. The whole incident was caught on dashcam. Montgomery County is included in the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area. Most of the county's residents live in unincorporated locales, of which the most built up are Silver Spring, and Bethesda, though the incorporated cities of Rockville and Gaithersburg are also large population centers as are many smaller but significant places.Montgomery County, like other inner Washington, D.C. suburban counties, contains many major U.S. government offices, scientific research and learning centers, and business campuses, which provide a significant amount of revenue for the county