Reels of film and the Hollywood stars who fill them share one common enemy: aging. But while an actor can go under the knife or get a bit of filler in an effort to stay young, it's a one-way street for film, which eventually starts to break down. For a movie company that has spent tens, or even hundreds of millions of dollars on a film, that's bad news. "Keeping film in the proper environment ensures its longevity," says Doug Sylvester, CEO of the film preservation company Pro-Tek Vaults. IMAGES AND SOUNDBITES