In 1970, Arthur Hailey’s blockbuster book, Airport, became the first film in that decade’s disaster movie cycle. It also led to three more Airport films, and the adaptation of Zero Hour (also a Hailey story) into Airplane!. This second installment, Airport 1975, celebrates its 50th anniversary this year. It straddles the line between big budget, all-star A picture (the original), and implausible 70s schlock, as observed in the final two Airport films. Here, we’re also treated to appearances by classic stars, including Gloria Swanson and Myrna Loy. I am contractually obliged to say that Charlton Heston is the hero....