I never did work out why Wesley was wearing a commodore 64 loading screen as a jumper?
It's because he was an acting ensign in all divisions and therefore wore three department colors at once. That's why I've always suggested an acting ensign boff who is universal. He can take four space and four ground skills from any discipline but all of his abilities are ensign rank.
He was basically Roddenberry's Mary Sue by way of Marco Polo or the kid from Treasure Island.