Thanks Ray.... You've illuminated more information in the photo than I had realized was present.....You're right JFK has obviously been hit , Chaney is alongside the Lincoln looking over his right shoulder at JFK, whose hands are at his throat, and Connolly has not yet been hit by a bullet.....
One picture is better than a thousand words.....
You are wrong, Cakebread. His hands are not at his throat, they never went near his throat. The Altgens photo shows only his left hand, index finger extended, other fingers curled, and the hand is in front of his chin. His right hand-- by the time this picture was taken--is open and in front of his chest and continues to move downward onto his chest. You're right about a picture being netter than a thousand words, though, because this picture along with the Zapruder film proves that you haven't a clue as to what President Kennedy's hands did when he was shot!
Watch this GIF closely, and note where his hands are. Right hand covers the mouth, the left hand comes up directly under the right, meeting the right hand, left index finger is extended. When Mrs Kennedy takes hold of his arm and pulls his left arm involuntarily (since at the same time, she is turning her head to look at the governor) his left arm and hand remain in the same position until the fatal shot is fired. The right hand cupped over his mouth until Mrs. Kennedy takes hold of his left arm. As he turns his head to the left, his right hand opens slightly, and remains at the same height so that by the time he stops turning his head, the right hand is at cheek level, until beings it down, level with his chest. There is absolutely not one frame of the film showing him "grabbing his throat".
https://gfycat.com/gifs/detail/PopularGrotesqueIvorybackedwoodswallow