Visiting Marks work

I'm a very visual person, so it drives me crazy when the last 3 jobs mark has had, weren't really places that we could visit. I like to be able to mentally recall a room as he's telling me a story. Anyway, this job, although it has strict security rules, is visit-able. Yea! 

I was thoroughly impressed by the amount of knowledge he has, and needs, to be able to do something "simple" like taxi one of those big planes, or swap out an engine. It's wild.  

The boys were also extremely excited to get such a great, hands-on field trip. What little man doesn't love airplanes?