Run silent, run deep.  Buried in the core of every submariner that ever lived is the urge to do precisely that.  When they built the American space navy, they took that tradition with them.  They flew the flag when ordered, but otherwise they disappeared in the deep dark between planets, never seen unless they wanted it that way.  When we discovered hyperspace, they dove into it as if it were a special gift from God.  They named it subspace.