Telephone:
Commercial: 520-538-5482
DSN: 879-5482

Fax:
Commercial: 520-538-4334
DSN: 879-4334

Postal Address:
Joint Interoperability Test Command
P.O. Box 12798
Fort Huachuca, AZ 85670-2798

Visitor Support Center
Commercial: 520-538-5429
DSN: 879-5429

General Testing Support
Primary: 703-882-2280
Alternate: 301-744-2804