This show is so slow. This episode was 30 mins of build up to a conclusion which was obvious at the end of the last episode.

Proof, once again, that the looking away from the camera gimmick doesn't work in a cockpit/cabin. Was the producer hanging on the outside of the Spruce Goose or sitting at the feet of the cameraman?

Into season 8 and they're discussing basic engineering aspects such as reinforced concrete and cantilevers as "Impossible" engineering. Waste of an episode. Possibly could have used the building for Megastructures, but there is nothing about this building that warrants inclusion in this series.

The look away from the camera gimmick doesn't work in small spaces like an aircraft cockpit and train driver's cabin.