TGI provides systems and services for geolocation; intelligence, surveillance and reconnaissance missions; and signals intelligence to defense and intelligence customers.
The acquisition complements Six3’s offerings in the ISR, signals intelligence and cyber markets, said President and CEO Robert Coleman.
The move also comes at a time when national security customers are increasingly relying on real-time data from sensors to support activity-based intelligence, he added.
TGI has 180 engineers in its workforce and Six3 has 1,800 employees.
Including TGI, Six3 has made four acquisitions since its founding in April 2009.