I did some research on the cross Chad Pergram found in the Capitol Rotunda. I do see a cross on the picture with the POW/MIA flag. That picture was taken on 8/26/2018 by Chad Pergram as well.
And… well… I see Pepe too. Top kek to the anon who memed that one!
Sauce here: https://twitter.com/chadpergram/status/1033776511126515715?s=21