My Theory only…The people in the sub were already dead when they dropped them into the ocean…let them drop to whatever depth…and now we are just waiting for them to be brought up dead…easy pleasy…

One thing that bothers me on this whole thing is why didn't they have at least two locators pingers on that sub??(almost all subs and semi-subs have the pingers…even cheap ones would work)…my theory is they probably do have them, but you can't use them if you are already dead…