| Business | Phone |
| Avion 4970 Corporate Dr Nw, Huntsville 35805 | (256) 721-7006 |
| Echota Research & Sci Applctns 100 Washington St Ne, Huntsville 35801 | (256) 539-0775 |
| Griffon Aerospace 310 Nick Fitcheard Rd Nw # C, Huntsville 35806 | (256) 859-3880 |
| United Space Alliance 555 Discovery Dr Nw, Huntsville 35806 | (256) 971-2600 |