| Business | Phone |
| Quorum Independent Distr 11905 Rushworth Ter, Germantown 20874 | (301) 916-7626 |
| Genesis Security Systems 20459 Goldenrod Ln, Germantown 20876 | (301) 444-3399 |
| High Profile Security Sltns 12111 Pikeview Ter, Germantown 20874 | (301) 528-2425 |
| Homeland Security Inc 13113 Briarcliff Ter, Germantown 20874 | (301) 428-4900 |