There's a job in Subway Town where you have to destroy 3 Authority mobile generators in the Gearhead vault. I destroyed the first 2 then before I EMPed the last one, I walked into the room right past it. The music changed and when I walked back into the gen room and threw an EMP grenade at it, the gen did not malfunction or anything. It remained half lit. After that I threw another EMP, same thing, but instead of sticking it just bounced off like a regular grenade. So I could not complete the job. So I have to go back to the autosave when I first entered the Vault and have to do it all over again.