7. Operation—Mt. Diablo

Drive to the high-rise building southwest of the HAUM Data Center. Enter the city block with both objective points (cell tower panels) from the north, heading south. Climb the two ladders from the Dumpster, onto a roof midway up, during which time Sitara lets you know !nvite is blowing up over Zodiac. Then locate the window-washer crane ahead of you above the large lip of the next building, and ride it up.

Jump across the building to the one you just climbed up, and work your way up through the construction equipment and scenery. When you reach an area with a wood fence above you, destroy the explosive barrels so you can climb up to reach the roof. Then install both cell tower boosts.

DedSec needs time to bypass some proxies, so descend the same way you came. As you reach the ground, you’re told where the Zodiac Killer is.