I met most of the last wave of GB when I was there...and also knew current member Guy Pierce, he taught my pioneer school back when he was a CO.
I saw several of them behave arrogantly when I was there in the late 80s early 90s, like Schroeder, Klein, Jaracz, and Henschel.Klein chewed me out once and was shaking and clenching his teeth really over the top weird. Schroeder and Henschel got bent out of shape bc a waiter broke up the table they were sitting at before noon meal (not enough people at it, it was a rule), and Schroder chewed that guy out and you could see the anger and outrage on his face that they dared to make him dispurse to another table. Jaracz had arrogance written all over his face it was obvious.
Barr, Sydlik, Swingle, Gangas seemed really nice. Barber was c r a z y but very funny.