The Navy's top acquisition executive is expected to testify before Congress today that if sequestration-imposed budget cuts remain, the Marine Corps' next-generation amphibious vehicle will potentially be delayed for up to three years, according to sources. Sean Stackley, the assistant secretary of the Navy for research, development and acquisition, is scheduled to appear before the House Armed Services tactical air and land forces subcommittee this afternoon. The hearing will examine the impacts of a continuing resolution and sequestration on the...