“Harrison Ford doesn’t have a very commanding presence,” says a Yale student who worked as an extra in a classroom scene filmed on the New Haven campus for the new Indiana Jones flick, harshly grading the aging action star’s performance as a professor at the ficticious Marshall College. “It was just very generic stuff about archeology that he was struggling to remember. He doesn’t remember his lines very well.” Shooting has moved on from New Haven, and the quote appears in a detailed and largely spoiler-free wrapup from the Yale Daily News. The centerpiece of the Steven Spielberg-directed shoot was an elaborate motorycle chase sequence apparently preceded by an anti-Communist demonstration referencing Julius and Ethel Rosenberg, actually executed in Sing Sing’s electric chair as atomic spies in 1954, three years before the flick takes place. A pair of coeds, who are obviously not in period costume, pose with placards.