>Like, he wondered why, if this time travel was so perfect and
>exact (which I argued it actually wasn't), why couldn't the
>mob just send guys to volcanoes or other areas of disaster?


it seems perhaps the guys were sent back to the exact spot where the machine was, so their solution seems the most efficient, unless the mob set it up on top of a volcano (or other dangerous spot)
Though I'm hazy on whether Bruce Willis was in China when they try to send him back, or if they'd brought him to the machine in the US after kidnapping him