For a moment...a brief moment...there was silence.  Then the sound of a car starting...or trying to.  The engine didn't turn over.  Two gunshots in rapid succession.  The a shout, from not too far away, but from somewhere beyond panic.  "Start the engine.<em>Start the goddam engine!</em>I don't<em>know</em>what the fuck they are!"  The motor, failing to turn over again.  Another gunshot.