Some were saying it was a double who got on Marine1 and went to WR.
Just adding info from yesterday - Dan could be sending comms. To me, it looked like POTUS, same build, same walk and mannerisms, who got off Marine1.
Pic's of inside the Presidential suite at WR.
https://nypost.com/2020/10/03/inside-walter-reeds-presidential-suite-where-trump-is-staying/