This video claims the shell casings found at Sutherland don’t line up with shots fired through the door and window. That’s because AR-15s eject casings at least 6 feet to the right, according to the many shooters’ comments here:

Carbine Brass Ejection Distance? – AR15.COM

The videographer also shows fuzzy photos, claiming there are no bullet holes — which can’t be seen in fuzzy photos. Sharp, closer photos show numerous bullet holes:

PHOTOS: Many Bullet Holes in Sutherland Baptist Church

PHOTOS: AR-15 Bullet Holes are Tiny – Compare to a Penny – Not easily seen from a distance