
The Navy is working to ensure the acoustic profile of the future ballistic missile submarine is low enough that it can avoid being detected and withstand new technologies foes may introduce throughout the planned 50-year year lifetime of the subs, the Navy’s acquisition chief said Thursday.“We have to project what that threat will be for the next half century,” Sean Stackley, the assistant secretary of the Navy for research, development and acquisition, said.The Navy plans to begin construction of the…