After freeing Rosenberg from the captivity of the US Marines detachment sent to silence the facility, Calhoun escorts him to a decommissioned prototype teleportation laboratory, where several Black Mesa employees have already gathered.

Rosenberg and his colleagues plan to escape the facility using teleportation technology.

Emerging near Black Mesa's classification yards, Calhoun learns that Dr. The elevator is badly damaged and fails, sending Calhoun plummeting into the depths of Black Mesa.Ĭalhoun regains consciousness at the bottom of the shaft and begins to fight his way to the surface to escape. As Calhoun finishes repairs, however, Freeman's experiment takes place and results in a 'resonance cascade', causing massive damage to the facility and teleporting alien creatures into the base. After reporting for duty, Calhoun is instructed to assist in maintenance on a malfunctioning elevator. Plot Overview Blue Shift begins in a similar manner to Half-Life, as Barney Calhoun rides a train through the Black Mesa facility to reach his place of work.

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