Two Capt's together (depending on the personalities involved ) is not always the optimum configuration from a CRM point of view ( IMHO), and of course just makes any whoopsy even more inexcusable to the investigators, who conveniently ignore that one guy is not in his "normal" role. . .even if he is a LTC / TRI / TRE. Most days I have spent in this config have been very pleasant, but the odd one has reminded me why I am SOOOO glad I fly in the LHS.