Driving Directions from DFW Airport:
- Start going toward the AIRPORT EXIT on INTERNATIONAL PKY N (TX-97-SPUR N) (Toll applies) go < 0.1 mi
- Continue on TX-121 N go 0.6 mi
- Take the I-635 E exit onto I-635 E go 23.9 mi
- Continue on I-635 S go 3.9 mi
- Take exit #8B/TEXARKANA onto I-30 E go 10.7 mi
- Take exit #67A/VILLAGE DR/HORIZON RD go 0.2 mi
- Turn RIGHT on HORIZON DR go 1.8 mi (42.1 mi in total)
Dallas Field Office will be on the right
The Dallas Field Office is not accessible via mass transit.
An approved Classified Visit Request must be on file for all visitors requiring access to classified information at the Dallas Field Office. When you request to visit, please include the name and phone number of your point of contact at GTRI, and the purpose and date of your visit. Send your request to:
Paula Wilcox
Phone: 214-771-3901
Fax: 214-771-3905
Contact Information
GTRI Dallas Field Office
6750 Horizon Drive
Rockwall, TX 75032
Jim Turner, Manager
Phone: 214-771-3901
Fax: 214-771-3905
Security Information 
Special security procedures are required before and during some GTRI visits. Learn about visitor procedures like visits involving classified information, visits not involving classified information, classified visit re-quests and long-term visitors.