This is a DS operation NOT a security failure because:
This is NOT a lone 20 year old gunman - he is the patsy.
He had to have had assistance getting into position at the secured location.
Eye witnesses claim that shots were fired from a 2nd location (east of and perhaps a little north of the patsy's rooftop location). Maybe the water tower?
Preliminary audio analysis indicates that 3 different guns were fired (Patsy's AR-15? (although no brass was photographed at his rooftop location), Shooter #2 and USSS Counter Sniper's kill shot of the patsy)
The entire security detail STOOD DOWN when they knew of an armed threat risk on the roof 130 yards away from their protectee
The Counter Sniper IMMEDIATELY (within 4 seconds) acquired the threat, aimed and fired the shot that killed the patsy. No, he knew of the patsy's location on the roof, he had been watching him with binoculars for several minutes and had already sighted him with his rifle. He WAITED for the shots to kill Trump to be taken then he IMMEDIATELY killed the patsy. This was planned!
This is a DS operation NOT a security failure because: