| Business | Phone |
| Pratt Security & Invstgtns 1345 W Mason St 201, Green Bay 54303 | (920) 405-3700 |
| Madison Security Inc Green Bay 54301 | (920) 362-7233 |
| Janus Security Svc 2159 S Ridge Rd, Green Bay 54304 | (920) 965-1791 |
| Response Security Inc 2733 S Ridge Rd, Green Bay 54304 | (920) 884-7440 |