General Dynamics C4 Systems, Scottsdale, Arizona, recently received the Defense Mobile Classified Capability (DMCC) contract from the National Security Agency (NSA). As part of the contract, General Dynamics will deliver up to 1,000 Samsung KNOX-enabled Galaxy S4 smartphones provisioned with added GD Protected software for the U.S. government. With these new smartphones, authorized government personnel will be able to make secure phone calls and access classified email. With GD Protected software, the phone operates using only authorized software and applications from a trusted source. The company will provide system updates and upgrades over the air. The GD Protected Samsung KNOX Galaxy S4 smartphones will also include government-approved mobile device management from Mobile Iron and secure voice from CellCrypt.