Go to the roof of the LYU Campus level and find the ventilation unit to the far left when you come in from the staircase doors. On the vent is a little fuse box. Take cover directly on the fuse box and press Forward. If done correctly, you will be on the vent. Have a friend stand between the vent and the closest edge of the roof, then walk over him and onto the edge of the roof. You can now watch over the outside of the campus and into the other building.