Lack of sirens, very bright blood, strange leaked photos of Stephen Paddock's suite and dead body, inconsistencies all around.
Also I saw a video where someone mentioned tapping into an audio system, saying those sounds where coming from speakers.

And this video with a guy yelling and a glimpse of one leg with rolled-up trouser

Seems like acting to me.
Excerpt from an article about Freemason initiation:

One last chance to ask about arcane ritual. The rolled-up trouser leg. Now that has to be a joke, surely?
“During the initiation ceremony, for a moment, a very short time – and it only happens once in a person’s life – a trouser leg is rolled up,” admits Mr Brown.

If you care to read it, it's here

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