The furnace fire obstacle course
two things:
1) As Sigourney Weaver said in Galaxy quest: "Why is thing even here!!?! it serves no purpose!"
2) If Mr Connery can transit the crazy crushing fire machine once , in a outside-to-inside direction , and then get to the door latch to open the big doors and let the SEALs in , why dint he just open that door and stroll out first time round when he was escaping?