Hi guys,
The search for new evidence goes on because nobody has found the proverbial smoking gun. It is probable there will not be any. Jets leave nothing but a roar and a rumble. At night, intentions unclear, snowpack disturbed, getting out of danger is reasonable. Walking a mile in snow is not reasonable unless at some point the need for heat was greater than the need for shelter.This sends them to the trees. There is no evidence the hikers were approached on ground by man nor beast. All their property remained. The threat was temporary, but life threatening.The behavior of the hikers is logical and consistent with survival instinct at the tree, the trail or the ravine. When you rule out the impossible, whatever remains, though unlikely is the reason.