I was messing around the KJFK cargo are (DHL), and went to an "unused" area nearby only to see an old(?) hangar with dirt and rust.
It made me realise the attention to detail, and hardwork that is put into every part of the product.
I am used to a quick check of an airport, and then the regular gate to gate flight.
I always thought fsdt is just that, but now I have that much more respect.