Marine veteran Daniel Penny, 26, is on trial for manslaughter in NYC after placing homeless man Jordan Neely in a deadly chokehold on the subway in May 2023.When proceedings left off Friday, several witnesses who were on the crowded uptown F train described being terrified by an unhinged Neely as he threatened and lunged at people.One veteran straphanger said she was “scared sh–tless” by his behavior, and told cops at the scene that “he scared the living daylights out of everybody” before Penny intervened.Follow The Post’s live updates from the courtroom for the latest news out of the trial:...