Preston...absolutely wonderful! Like everyone else, you had me until the very end...and what an end. Not only what "they" actually were, but their monikers, lol. I saw the four of them in the bay perfectly.
Two things: I said, "Hmm...Alcatraz has been closed for years. Something wrong here..." And, "No one makes a swimming getaway in that bay..."
Again, one of my favorite writers has written a clever yarn, designed to put us off guard...send us down the wrong path...and make us laugh uproariously at the end.
As usual, you have written with perfection...nary an error to be found..and combined humor with an ending that I definitely did not anticipate.
An A+ for PLAN B!