Kek. This was my work. Glad it helped you.
I dug further on this but never updated graphic.
POTUS schedule that trip was very packed, so I now believe it was Pompeo or another staffer that made the NK trip.
The plane was the smaller one used by FLOTUS on her leg that went to Alaska later in the trip.
That smaller plane can land on the short runway at that NK site.
She tweeted a runway pic which proves the smaller plane was on the rip.
I'll try to update the graphic after workfagging.
They clearly wanted us to know SOMEONE made the trip or they wouldn't have put it in the video montage.