 CONT: Near the end of the film, when the Thing breaks through the  door to confront the airmen for the last time, the wood planks that  had been used to reinforce the door are broken off and dispersed.  Then the camera quickly cuts to the airmen and then back to the  Thing. Only now there is a new large piece of wood that appears next  to the Thing, which he proceeds to pick up. This piece of wood was  not there when he initially broke through the door.