I have played this mission through 3 times now with the same end result. I keep getting trapped in or locked out of Edwards house by the metal shutters. I thought maybe it was because I killed the NPCs in the house the first couple of times so I left everyone alive the 3rd time. And once again I'm stuck in the house. The shutters are down and I cannot figure out how to get out. I've done everything I needed to, the rifle, the radio, and looted the place. How can I get out when the shutters are all down?