Electronic warfare (EW) experts at Northrop Grumman are continuing production of common open-architecture RF jammers for infantry, land vehicles, and fixed sites to protect U.S. and allied warfighters from radio-controlled explosives. The U.S. Naval Sea Systems Command in Washington announced a $103.4 million contract modification to Northrop Grumman Mission Systems in San Diego for low-rate initial production of the Joint Counter Radio-Controlled Improvised Explosive Device (RCIED) Electronic Warfare, Joint Crew (JCREW) Increment One Build One (I1B1). CREW systems provide combat troops protection against RCIEDs and are designed to provide protection for foot soldiers, vehicles, and permanent structures, Navy officials say. This integrated design makes the most of commonality across all capabilities, reduces life-cycle costs, and provides increased protection against worldwide threats.