Passengers are saved through a portal when airplanes crash

Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.

An interstellar teleportation device, found in Egypt, leads to a planet with humans resembling ancient Egyptians who worship the god Ra.

The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite Air Force special operations team, one of more than two dozen teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, Replicators, and the Ori.

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.

After a plane crash, a young therapist, Claire, is assigned by her mentor to counsel the flight's five survivors. When they share their recollections of the incident -- which some say include an explosion that the airline claims never happened -- Claire is intrigued by Eric, the most secretive of the passengers.

While plane crashes are rare, near misses in our crowded skies are anything but. Thanks to modern technology, these terrifying experiences are being captured more and more, as they happen, on cameras, mobile phones, and cockpit recordings, providing insights that are as informative as they are horrifying. See firsthand how recent pilot errors, technical failures, small mistakes, and big storms have placed passengers in life-or-death situations. Then discover why these incidents happened, and what must be done to prevent them from reoccurring.

When a solar storm wipes out the air traffic control system, Air Force One and a passenger jet liner are locked on a collision course in the skies above the midwest.