| Business | Phone |
| Genreal Security Systems Inc 1414 Crain Bus Hwy N # 3b, Glen Burnie 21061 | (410) 424-2020 |
| Graham Security Svc 7223 Baltimore Annapolis Blvd, Glen Burnie 21061 | (410) 768-4103 |
| Leland Global Ent 105 Leonard Ct # 1, Glen Burnie 21060 | (410) 768-4215 |