Wouldn't surprise me if Cruz knew there was to be an active shooter drill and took advantage of that foreknowledge, he knew he could do his evil, then walk away with the students - as he did. A drill also possibly explains why the four deputies stood by and didn't move at the sound of gunfire. They also knew it was a drill.
I assume, just as in the case of Vegas, you'll never know the truth. But now it becomes clear why there were flashes from the helicopter as it flew over the crowd - that was part of the drill taking place, they were firing blanks, and the perps who had prior knowledge, took advantage, killed Paddock, smashed the windows, and 58 people lost their lives.
It's the crisis actors who have that foreknowledge. They can't do their work without it. imho
A Strange Parkland School Eye-Witness Most of MSM is Ignoring!
https://www.youtube.com/watch?v=x58j40CS6Vw
http://freerepublic.com/focus/f-news/3634902/posts?page=76#76
interesting graphic - video on #78
vivid imagination suggests ‘body in bag’ might have been ‘second shooter’ - patsy like paddock?