Send them these:

Thread where the attack was predicted 3 weeks beforehand: (https://archive.4plebs.org/pol/thread/141096258/#q141102703))

Police scanner audio confirming there were AT LEAST two shooters and two shooting locations (https://www.youtube.com/watch?v=gpMrm1xUJ40))

Eyewitness adamant there was at least two shooters and at least one shooter on the ground (https://www.youtube.com/watch?v=7SzDfqKQ0UQ&feature=youtu.be))

Another eyewitness saying multiple shooters (http://archive.is/9TR5u))

Taxi driver video where it can be heard that there were shots from multiple locations. Muzzle flash seen on a lower floor of Mandalay (https://www.youtube.com/watch?time_continue=642&v=mBbOFwWquAw))

Woman at the concert stated that there was a Hispanic-looking couple harrassing people an hour before the shooting, the woman saying "you're all gonna die" and "they're all around you." http://archive.is/h4A6h (indicates multiple shooters).

Automatic gunfire 40 minutes AFTER Paddock found dead (https://hooktube.com/watch?v=OVDn1FvRyiU&t=43m10s))