. "Captain Calhaan is both the starting and ending point for The Great Northern Wall mission. When you first start the mission, you talk to him to get your mission goals, and then at the end of the mission you talk to him to finish it."@en . "Captain Calhaan is both the starting and ending point for The Great Northern Wall mission. When you first start the mission, you talk to him to get your mission goals, and then at the end of the mission you talk to him to finish it."@en . . . . . . "6"^^ . . "Captain Calhaan"@en .