| Business | Phone |
| Electronic Warfare Assoc 3125 University Dr Nw # B, Huntsville 35816 | (256) 539-2822 |
| Inter-Coastal Electronic's Inc 555 Sparkman Dr Nw, Huntsville 35816 | (256) 864-3148 |
| Morgan Research Corp 4811 Bradford Dr Nw # A, Huntsville 35805 | (256) 533-3233 |
| O & S Enterprises 2800 Bob Wallace Ave Sw # 2, Huntsville 35805 | (256) 539-4702 |
| Phase Iv Systems Inc 3405 Triana Blvd Sw, Huntsville 35805 | (256) 535-2100 |
| System Dynamics 4815 Bradford Dr Nw, Huntsville 35805 | (256) 895-9000 |