The Navy moved its SSN(X) from a 2035 start to the "early 2040s," as it takes risk in modernization programs to pay for current operations and readiness.
George Rumford, director of the Test Resource Management Center, told lawmakers this week the effort to build a new high-speed track is in the study phase.
The Navy cut a submarine from its spending plan, but is pouring billions of dollars into supporting suppliers and helping increase their production rates.
Air Force Secretary Frank Kendall said he's worried funding constraints are keeping the service from transitioning quickly to more resilient space systems.
“Cyber capabilities will continue to be a critical component of our national defense and, accordingly, a priority in our budget,” a senior official said.
The Army is changing directions in its effort to field a long-range cannon, scrapping its 58-caliber prototype in favor of considering available systems.