Three letters: W. T. F.
Okay, I am good with the San Diego police wanting to have officers on their trolley - it is a city sponsored transportation medium. Local cops patrolling local transport... just like transport anywhere else in any other large city.
But... then... there is this thing called the Posse Comitatus Act. Feds on a local bus or trolley seem to be in clear violation of that...
A little quote from the Wiki:
The Act prohibits most members of the federal uniformed services (Army, Air Force, and State National Guard forces when such are called into federal service) from exercising nominally state law enforcement police or peace officer powers that maintain "law and order" on non-federal property (States, their counties and municipal divisions)....
The statute generally prohibits federal military personnel and units of the United States National Guard under federal authority from acting in a law enforcement capacity within the United States, except where expressly authorized by the Constitution or Congress. The Coast Guard is exempt from the Posse Comitatus Act.
...but then... I am not surprised... Just one more moment when I utter the words, "I am proud to be an American"... just a little quieter....
Thomas Jefferson, where are you when we need you most?!?!?!?!?!
"Snakes on a Plane"? Nah... Feds on a Train!