Here’s the key and all the security codes you’ll need <<Slides briefcase>> So just head to where the sheriffs office was and look for the toilet. Flush it 3 times then step inside it and flush once more and a portal will open below you and take you into the entrance area. Just put the key in and turn 3 times, then yell “Bazinga” and the door will open. Once the door is open, open the briefcase and type 777913 on the calculator inside it and it will disable the auto turrets. After that just kill the deathclaw and it’s yours.