Most likely is an air taxi from somewhere nearby. Or someone just dropping
off or picking up a passenger. I don't know how they handle TSA scrrening
these days.

The problem is not so much landing as it is leaving. Not only do you have
to get ATC clearance, but the problem of getting sufficient separation to
avoid wake turbulence can cause major delays. You can find yourself
sitting in the grass waiting for a line of jets to clear.

Wally
been there done that