1. One who keeps his eye on his F/O during the walkaround, to ensure he doesn't go and commit a gross security breach on another Airline's 787..... (F/O..... you idiot!)
2. One who ensures that the 2nd officer is completely rested for his flight because he still has no work ethic and needs to be spoon fed. (Apologies to those who didn't write into the Boeing Fleet office whining)
3.