| Name : | Communications Engineering CO |
| Address : | 405 Boyson Road |
| City : | Hiawatha |
| State : | Iowa |
| Zip : | 52233 |
| Phone : | (319)294-9000 |
| Name : | Control Installations of Iowa Inc |
| Address : | 955 Kacena Road |
| City : | Hiawatha |
| State : | Iowa |
| Zip : | 52233 |
| Phone : | (319)362-2760 |
| Name : | Iowa Fire Protection Inc |
| Address : | 735 Robins Road |
| City : | Hiawatha |
| State : | Iowa |
| Zip : | 52233 |
| Phone : | (319)378-0820 |