"Multiple branches are working together for this research.  You can see
   how important it is."
    The general considered.
   "I may be slightly dense, but how does a lock and key threaten national
   security, in the slightest?"
    "When a door is locked, our soldiers and spies have to work harder to
   enter the locked residence.  This can make it harder to keep situations
   under control.  The enemy has locks and keys almost everywhere."
    The general tried to carefully glance at the lock on their own door,
   without letting anybody see.