> JACKSON AND TULL CHARTERED ENGINEERS District of Columbia Since: 1974 JACKSON AND TULL CHARTERED ENGINEERS
> HARD LIGHT CONSULTING GROUP, L.L.C. District of Columbia Since: 2002 HARD LIGHT CONSULTING GROUP, L.L.C.
> APPLIED CLOUD & DEV TECHNOLOGIES LLC District of Columbia Since: 2024 APPLIED CLOUD & DEV TECHNOLOGIES LLC
> INDUSTRIAL & COMMERCIAL SECURITY SYSTEMS, INC. New Mexico Since: 1986 INDUSTRIAL & COMMERCIAL SECURITY SYSTEMS, INC.
