2008 - Martin Wood
SG-1 and Jack O'Neill (Richard Dean Anderson) attend a Tok'ra extraction ceremony for Ba'al (Cliff Simon), the last of the Goa'uld System Lords. He gloats that he is merely the last clone, and that the real Ba'al has a fail-safe plan. The real Ba'al travels back in time to 1939 Earth and massacres the crew of the Achilles, the ship carrying the Stargate to the United States; the captain (Mitchell's grandfather) survives long enough to keep the ship from being destroyed. In the present, people and objects disappear, starting with Vala Mal Doran (Claudia Black) and Teal'c (Christopher Judge). Jack is killed by Ba'al before Samantha Carter (Amanda Tapping), Daniel Jackson (Michael Shanks), and Cameron Mitchell (Ben Browder) manage to reach the Stargate. They emerge inside the derelict Achilles, which has drifted to the Arctic — Ba'al's actions have created a timeline in which the Stargate Program never happened. After escaping from the sinking Achilles, they are rescued by a team led by Colonel Jack O'Neill. Although General Hank Landry (Beau Bridges) believes their story, permission is denied to change the timeline. In the alternate timeline Daniel is still trying to convince people about his theories of the pyramids, Carter died in a space shuttle accident and Mitchell does not exist at all because his grandfather died saving the Achilles from Ba'al's bomb. The three are separated and given new lives to lead.