Black tarpaulins once covered parts of a $12 billion nuclear submarine General Dynamics Corp. is building in Groton, Conn., blocking the view of workers who lacked security clearance to see the top-secret components underneath. That is one of many workarounds that General Dynamics and other defense companies have used to continue work on tens of billions of dollars in defense contracts during an unprecedented backlog in security clearances.

Source: Wall Street Journal October 20, 2018 10:52 UTC