Throwing in my two cents here - QuestioningMark has always done a great job playing senior characters in a way that welcomes and educates newer characters to a department; I can vouch for it personally on several occasions, including here with Cam for my engineer character Julius. I know the player has a good grasp on the mechanics of the game and the etiquette of RP, and Cam as a character has done sterling work as an unofficial leader of the department and tutor in my time with Aurora so far.