High above the entire city, he discovers the spent shell casing of the rifle (later identified as a "30 ought 6") and carefully places it in a used envelope (addressed to himself at the Homicide Department at 850 Bryant Street from an address in Provo, Utah) and hen he finds a ransom note pinned to a TV antenna.After destroying he TIE fighters, they escaped into space and soon found hemselves drawn by a tractor beam and swallowed within another massive freighter - the pirate shipEravana.J.Allen Hynek, who served as the film""s technical advisor (and appeared in a bit cameo part during the final scene).Marty purchased a copy ofGray""s Sports Almanac(that listed the winners of major sporting events between 1950 and 2000), planning to use it for gambling purposes, but "Doc" refused ("I didn""t invent the time machine for financial gain") and placed it in the trash.In this film, Henry Fonda plays a more passive individual when compared to his portrayal of Juror # 8 in a jury room in12 Angry Men (1957).