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Sargent Major Caleb Sullivan is a soldier put on the Lifeboat crew after Wyatt Logan stole the time machine to save Jessica Logan and Dave Baumgardner was killed by Karl on a mission.

Biography

Sullivan, along with Lucy Preston and Rufus Carlin, are put on an unsavory mission to kill an innocent Maria Thompkins while she is a 17 year old so she will never give birth to Garcia Flynn.

When the crew arrive in 1962, Rufus shoots Sullivan with a tranquilizer dart as Lucy takes Sullivan's gun and points it at him. The team leaves him and takes the Lifeboat back to 2017 where Lucy, Rufus, Wyatt and Denise Christopher take control of it..