McLaren: “Ten witnesses smelled gun smoke at street level at the time of the shooting”. The wind was 16 mph from the south west. The wind was blowing at 15 mph towards the TSBD. Patrolman Brown was standing above the motorcade on the overpass when he smelled gun smoke, wind was coming from behind him. Senator Yarbrough, riding in the car behind the Secret Service car, Ralph W. Yarbrough, was a war veteran and was very familiar with the smell of gun smoke. By days end, Deckers men pulled in several dozen witnesses. Hugh Betner saw one Secret Service agent pull out a gun, he was standing watching the motorcade. Senator Yarbrough also saw a rifle. Dallas Mayor see’s one Secret Service agent standup with a sub-machine gun. Secret Service agent Winston Lawson testified he saw a fellow agent holding a rifle, an automatic weapon and the first thing that went through his head is that he had fired it.
Agent Hickey was holding the AR 15. Agent Winston rides in the front of JFK in the lead car. He noticed Agent Hickey standing up in the follow up car, “I first thought that he had fired it”.
"Howard Donahue went through the Warren Report and found eleven witnesses that put the AR15 in Agent Hickeys hand at the time of the third shot. Of the eleven witnesses, seven are Secret Service agents". No mention of Mennengers book, I don't know. I have McLarens book on order, I will see what it says.