| Business | Phone |
| Army National Guard 2925 Willow Pass Rd, Concord 94519 | (925) 682-9391 |
| Us Marine Corps 3225 Willow Pass Rd, Concord 94519 | (925) 825-1775 |
| Concord Naval Weapons Station 10 Delta St, Concord 94520 | (925) 246-2000 |
| Us Army Dept 410 Norman Ave, Concord 94520 | (925) 246-4100 |
| Us Coast Guard 3295 Haleakala St, Concord 94519 | (925) 685-6854 |
| Us Navy Dept Concord 94520 | (925) 246-4074 |