Was the Sandy Hook shooting a fake?

[Max King of the Wild]

dsgrue3 said:
Most damning evidence is no surveillance footage of the shooter(s). Not a single frame showing a guy walking around the school with a gun.

Let's see the footage:

https://petitions.whitehouse.gov/petition/release-video-surveillance-footage-sandy-hook-elementary-school-during-shooting-massacre/Nq9zmSTc

Has any school shootings have security footage shown? Also, I'm glad it only has 900 signatures. I hope the CIA visits each person who has signed it