Former Navy SEAL Andy Stumpf rates nine underwater missions in movies and television for realism.Stumpf discusses the accuracy of underwater scuba-diving scenes in “Mission: Impossible – Rogue Nation” (2015), starring Tom Cruise; “Tomorrow Never Dies” (1997), featuring Pierce Brosnan as James Bond; and “National Treasure” (2004), with Nicolas Cage. He also discusses discharging guns and other weapons underwater in “Thunderball” (1965), with Sean Connery; “Alien: Resurrection” (1997); and “Act of Valor” (2012). Stumpf analyzes proper diving technique in “Archer” (2009), “Sanctum” (2011), and “For Your Eyes Only” (1981).Stumpf served over 16 years in the Navy SEALs — 12 years as an enlisted SEAL and five years as an officer before he medically retired.