I Know that to use that 0280 is below where the merc fix the elevator at. I see the elevator doors open on the second floor, but I forgott how to get the mercs scar to give information about elevator been fix by Interrogate at the three floor before enter the greenhouse. so that I can use the elevator on second floor and push the button to go down below the area to another room and cut the mat and to securty room to use 0280 and knockout the merc and use the computer for more information on displace and trap seven camera and finish up the mission