The Israeli documentary "The Gatekeepers," which consists of interviews with six surviving former heads of the Israeli security agency Shin Bet in post-1967 Israel, is showing at Film Forum through Sunday, March 3. The documentary revisits familiar events from the inside. The 97-minute-long film in Hebrew with English subtitles will show several times each day, with a first showing at 1 p.m. and a last showing at 10 p.m. The exact schedule is listed on Film Forum's website.