This was posted as a comment to that article:
01) Paddock was a rich investor who, by other reports, was an accountant. Afterall his home was worth $400 000 and supposedly had another place in Reno. This is enough to fund weapons purchases. As for the solo-shooter concern, who knows, maybe the other one slipped away since it took 1 hour and 10 minutes to leave but all the evidence released corroborates a single shooter all doubts aside. He had the room since September 28th and even 8-hour days makes this operation setup not nearly as time sensitive as you doubt.
02) Psychopaths have often enough done murder-suicide, especially in cases of vengeance rather than spur of the moment. Police have confirmed he shot himself after they breached the door to his room.
03) AR-15s don't always have muzzle flashes and if he had a custom, modified or enhanced break on the end, it wouldn't matter.
04) Echo and reverb. This with the fact that cellphone microphones are not as high quality when it comes to filtering distant noise.
05) ISIS claims a lot of things. Will you post a new piece when this is confirmed or denied outright?
06) His brother isn't a viable confirmant, he contradicts himself in the interview. One doesn't need a military background to purchase weapons. His weapons have so far been confirmed by the LVPD as modified meaning they are semi-automatic and made to function differently such as at an increased rate of fire.
07) Trigger modifications, tripods and a scope. This has been confirmed by a few police sources.
08) See #1.
09) Perfect way to slip unnoticed. We do this with spies but then you might think that supports your statement; it does not, at least not more than my own. No known affiliation does not mean any affiliation is absent. In addition no actual affiliation doesn't mean a human cannot do this on their own.
10) I've known some quite capable senior citizens when it comes to firearms and so because you scoff and laugh you think it's unreasonable. This is inexperience and ignorance on your part.
11) Political games.
The numbers in the comment correspond with the numbers on the article. Things to think about. I think he absolutely could've done it alone. Also, the article uses some quite shaky lines of logic, and I wouldn't trust that website with an objective opinion anyday. Not really into conspiracy theories because most of them just prey on paranoia. Let's wait for the facts to come out, shall we?
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I just noticed it, in the video you can hear 2 rounds of gunshots happening together after one of them starts shooting, when one starts shooting the other one starts as well.
Since they follow quite closely, it could be reverb as well as bullets hitting the ground. I read some interviews with people who were there and a couple do describe bullets hitting the ground. Reverb + bad smartphone mics + shots bouncing off the ground can easily create the illusion that there was more than one stream of bullets. I don't have a definitive answer, but do consider that before we all drift off into conspiracyland.