EMR CORPORATION	Ferrite Circulators and Isolators, Cavity Resonators, Antenna Duplexers, Transmit Combiners, Receiver Multi-couplers, Power Amplifiers, and RF Signal Enhancement Devices.
Federal Warning Systems	Federal Signal Outdoor Warning Products. Electronic, Electro-mechanical Sirens, Tone Alert Receivers, Siren Control Systems
Highway Info	Highway Information Systems Low Power AM Broadcast Systems
Rapid Reach	Enera RapidReach Automated Telephone Notification Systems
Test Equipment	General Dynamics Communications Test Equipment
TFT, INC.	EAS Encoder/Decoder Systems.
TalkSecure	General Dynamics TalkSecure Wireless and Wireline Communication Products
Vasona Technology, Inc.	Enterprise-wide Emergency Communication and Crisis Management software.
Wolf Coach	Mobile Telecommunications Systems.