Lockheed Martin won a $9.3 million contract modification
for the US and United Kingdom to provide strategic weapon system Trident fleet support, Trident II SSP Shipboard Integration (SSI) Increment 8, SSI Increment 16, Columbia class and UK Dreadnought class navigation subsystem development efforts. Trident II D-5
is the sixth generation member of the US Navy's Fleet Ballistic Missile (FBM) program which started in 1956. Systems have included the Polaris (A1), Polaris (A2), Polaris (A3), Poseidon (C3), and Trident I (C4). The first deployment of Trident II was in 1990 on the USS Tenessee (SSBN 734). While Trident I was designed to the same dimensions as the Poseidon missile it replaced, Trident II is a little larger. Work will take place in New York, California, Florida and Massachusetts. Estimated completion date is November 30, 2023.