There are qualified AAA umpires that could work the game behind the plate at Yankee Stadium just as there are qualified AAA shortstops that could play SS for the Yankees. A beginning umpire (little league) could not handle the umpiring any more than a beginning SS (LL) could handle Jeters job. It takes a lot of work and a lot of repetitions to do either at a high level. Yes, anyone can stand there, but can they handle the required situations, of course not.