Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

This is an image that Robin Unger posted on McAdams' forum to show how much Mary Moorman's coat was blowing in the wind. 

As you can see, it was a pretty darn strong wind, and that is something that a shooter, from the 6th floor, would have to adjust for. But, when in his life did Lee Harvey Oswald ever do the kind of shooting for which wind speed had to be calculated and adjusted for? Furthermore, how could he know how windy it was? Did he feel a breeze at the window? Did he notice Moorman's coat blowing? But, never having done this kind of shooting before, how did he know how much adjustment to make? How many times in your life have you done something for the first time and done it well? How did it go the first time you swung a golf club? Don't you think this was at least as hard as that?

This would have been a first for Oswald in two respects: the technical demands of sighting and shooting a moving object under rapid-fire and highly irregular conditions AND the act of killing another human being. He had never shot at a person before. Forget about the attempt on General Walker which Oswald didn't do. Here is an apt analysis: http://22november1963.org.uk/did-lee-oswald-shoot-general-edwin-walker

That Oswald could have pulled off the shooting feat is preposterous. When Criag Roberts, Army sniper and police SWAT officer, went up to the 6th floor and sized up the shooting, he immediately knew that Oswald could not have done it. And that's because he knew that HE could not have done it, and he knew that Oswald was not a better sniper than he was.

As for Oswald's Marine training, they don't shoot at moving targets at boot camp, and this wasn't just moving, but irregularly moving and with visual obstructions and the need for rapid fire and having to find and re-fix the moving target between shots after your cock the rifle each time. On his last marksman test with the Marines, Oswald scored only one point above failing. And he did very little shooting of any kind after that. Why even call him a marksman? Might as well call me one. That someone-anyone-would choose him to be a Presidential assassin is patently absurd.