After finally caving and getting Fallout 3 and New Vegas several months ago, I've played through NV a few times for the sake of seeing different outcomes on various things. Something only just now occurred to me, though.

I'm not sure if anyone's tried it (though it wouldn't surprise me if someone has), but after getting the upgrade for the sonic emitter in OWB, so that it can disable force fields, can it actually be used to disable the ones in the Sierra Madre basemant/vault in Dead Money?