1. Guardian Fire Protection Services
7668 Standish Pl, Derwood, MD 20855
Coordinate: 39.10915,-77.15563
Phone: (202) 780-1550
2. Montgomery County
7272 Muncaster Mill Rd, Derwood, MD 20855
Coordinate: 39.14802,-77.14703
Phone: (301) 869-6272