BAE Systems will provide identification-friend-or-foe (IFF) digital transponders, upgrade kits, and spares to the U.S. Navy and Army under a $20 million contract. The IFF systems increase situational awareness and help to positively establish the identity of friendly forces, reducing the risk of fratricide or "friendly fire." BAE Systems' IFF technology identifies aircraft and ships as friendly forces through transponders that are installed on submarines, surface ships, fixed-wing aircraft, and helicopters. BAE Systems will deliver 46 AN/APX-118 common digital transponders and 381 AN/APX-123 transponders to the Army and Navy, along with 400 modification kits and spares. Work will be performed in Greenlawn, NY, and is expected to be completed in December 2011.