Opening paragraphs....(a new Reacher)

"The eyewitness said he didn't actually see it happen.  But how else could it have gone down?  Not long after midnight a man in a green winter coat had gone into a small concrete bunker through its only door.  Two men in black suits had followed him in.  There had been a short pause.  The two men in black had come out again."
-Lee Child, A Wanted Man