As an ex TS loadie, if you really had to ask that, you obviously didn't know what the f@@K was going on. Maybe when you stick your head on the flight deck you should look at the Link16 and the rest of the toys and see if you could work it.
As far as I was concerned, the Air Eng was the biggest safety cog on the flight deck. I haven't flown the J, but a two man flight deck works well because it's a modern aircraft and therefore designed with that in mind. Nonetheless, it doesn't have half the gear it should have.
I don't know a competent, professional loadmaster who would have to ask those same questions. Does that tell a story...