In 1939, Bosun was a part of the crew of the Achilles and was annoyed with how Captain Mitchell kept zigzagging the ship across the Atlantic Ocean to avoid U-boats. When there was a rumbling, the Captain ordered Bosun to check that the cargo was secure. Arriving in the cargo hold, Bosun discovered an alternate timeline version of Colonel Cameron Mitchell, the grandson of his captain. Bosun mistook Mitchell for the captain and Mitchell warned Bosun that they were about to be boarded and armed him with a Thompson submachine gun. Though confused, Bosun took up position on one side of the Stargate and joined Mitchell in killing the Jaffa that emerged. After Mitchell killed Ba'al, Bosun killed the last Jaffa who was carrying a bomb. Moments later, the two men were joined by Captain Mitchell, leaving Bosun confused by the situation. (SG1: "Continuum")
- In an alternate timeline, when Ba'al gated aboard the Achilles, Bosun was killed in the unstable vortex of the Stargate when he tried to check the cargo and accidentally stood in front of the opening Stargate. (SG1: "Continuum")
- A bosun (also spelled "boatswain") is the head of a ship's deck crew, and is responsible for maintaining all components of the ship that aren't the purview of the engineer.