The Navy last week plunked down an additional $28.5 million to expand development of a new hypersonic booster for a submarine-launched, Intermediate-Range Conventional Prompt Strike prototype weapon -- exercising an option with prime contractor Lockheed Martin that allocates the largest portion of spending to date to a subcontractor. On Nov. 30, the Navy's Strategic Systems Programs office in Washington, DC, advanced the Hypersonic Booster Technology Development project with the second major contract action to date, lifting total spending so far...