From Eugene Boone's WC testimony:
"Well, I proceeded to the east end of the building, I guess, and started working our way across the building to the west wall, looking in, under, and around all the boxes and pallets, and what-have-you that were on the floor. Looking for the weapon. And as I got to the west wall, there were a row of windows there, and a slight space between some boxes and the wall. I squeezed through them.
When I did--I had my light in my hand. I was slinging it around on the floor, and I caught a glimpse of the rifle, stuffed down between two rows of boxes with another box or so pulled over the top of it. And I hollered that the rifle was here."
This is a description of the position of the rifle as seen in the Altea footage and the DPD photos. How much evidence do you need?