| Business | Phone |
| Air Marine Radio 2421 8th St B, Harvey 70058 | (504) 362-1226 |
| Litton Marine Systems 1865 Industrial Blvd, Harvey 70058 | (504) 328-9171 |
| Morgan Communications Inc 2480 Breaux Ave, Harvey 70058 | (504) 362-4820 |
| Northrop Grumman Marine Systs 1865 Industrial Blvd, Harvey 70058 | (504) 371-8365 |