| Business | Phone |
| Tri-State Security & Patrol 5404 W 9th St, Sioux Falls 57107 | (605) 330-4014 |
| Unity Security Inc 3012 E Elmwood Ave, Sioux Falls 57105 | (605) 332-4651 |
| Sioux Merchant Patrol & Sec 1501 N Cleveland Ave, Sioux Falls 57103 | (605) 334-9357 |
| Globe Airport Security Svc Inc 3001 N Minnesota Ave, Sioux Falls 57104 | (605) 338-0733 |
| Guardsmark Inc 401 E 8th St # 200p, Sioux Falls 57103 | (605) 335-4381 |