The U.S. Navy awarded defense contractor Lockheed Martin a $383 million contract to produce upgraded Trident II D5 missiles ...
Summary and 4 Points You Need to Know: The U.S. Navy’s Columbia-class submarines, designed to replace the aging Ohio-class vessels and maintain America’s sea-based nuclear deterrent ...
while the Columbia-class ballistic missile submarines also face delays. A total of 18 of a planned 24 Ohio-class nuclear-powered ballistic missile submarines (SSBNs) were built for the United ...