If you go to the airport webcam this JB flight is scheduled to land 2:38pm there's also a Delta flight on the arrivals list.
And if one looks further, the JetBlue flight is now shown as "CANCELLED".
There is a Delta flight listed as well on the Maho webcam but if you search that flight, it is "CANCELLED" as well or does not exist today as per the Delta website.
I am guessing these flights are preloaded into the system (whatever system you might choose for it to be) and are not properly updated. I think this arrival list is way out of whack.
NOTHING to get excited about.