| Business | Phone |
| Defender Services Inc 286 Christine St, Cape Girardeau 63703 | (573) 335-0144 |
| Fort Knox Security 605 W Kelly St, Cape Girardeau 63701 | (573) 579-1321 |
| H & R Alarms Inc 338 Limbaugh Ln, Cape Girardeau 63701 | (573) 334-4456 |
| Wolsey Investigative Svc Inc 2811 Wintergreen Rd, Cape Girardeau 63701 | (573) 332-0797 |
| United Security & Invstgtns 833 Broadway St, Cape Girardeau 63701 | (573) 332-8878 |