• Who was the shooter?
• What caliber rifle was used by the shooter?
• Did the shooter use optics on his rifle?
• Why was no LEO on that building?
• Why did LEO set up where they had blindspots?
• Who's responsibility was it to secure that building/area?
• How long were bystanders warning there was a guy with a gun?
• What LEO first had eyes on the shooter and what was their responsive action?
• Why was DJT not covered immediately when warnings about a gunman started being given?
• Was there more than 1 shooter?
• How was the shooter so hard to see before he shot DJT, but not after?
• Who all shot the shooter, and from where?
• What was the comms structure of the LEO there?
• What were LEO rules of engagement?
• What was the LEO chain of command?
Re: optics/scope
Some very rare individuals (Annie Oakley?) can shoot that distance without a scope, but there was also quite a breeze blowing, which only the very best can gauge/learn to overcome via test-shots, especially if shooting 'instinctively'.
So I believe the shooter WAS using a well-calibrated-for-that-distance scope, and was trained to check the flag for gusts. Missing like that, is not really missing by much, in terms of a paper target. One would still be on the paper, if you know what I mean.
It was only 150 yards. It's not a great feat to hit targets at that range without magnified optics.