Blackboxes: 2
#1. As soon as the mission starts, activate your nanovisor by pressing the UP dpad once. You should find the first blackbox beside a corpse just down the ramp.
#2. Near the end of the mission, you’ll have to get past a hallway with an auto-turret and regroup with Psycho in the elevator. Past the turret lies a corpse with the second blackbox.