In the Carrington Institute, go downstairs into the main warehouse and you will see a hover crate. Take this hover crate up the ramps to the office floor and into the targetting range. Take it into the range itself and put it between the doors to prevent them from closing. You can shoot the man outside with any weapon you select in the range, and he will never die. Inspect his body afterwards to find him covered in red spots, knives sticking out of him, and crossbow bolts embedded in him.