The U.S. Navy has awarded General Dynamics Advanced Information Systems, a business unit of General Dynamics, a $15 million contract modification to continue development and production of the Navy’s Surface Electronic Warfare Improvement Program (SEWIP) Block 1B3. General Dynamics will continue to help the Navy enhance its shipboard electronic warfare systems and capabilities, to include providing SEWIP with the ability to detect and identify additional potential threats and provide early warning to combat-systems operators.