wingman

A pilot whose plane is positioned behind and outside the leader in a formation of flying aircraft.

A person who helps, guides, or supports another, especially one who assists a friend in trying to seduce another person.

A player, such as a winger, who plays near the side of a field or court.

A pilot partner of another, a pilot who flies in the same wing or squadron.

a friend who accompanies one to offer (or receive) support

the pilot who positions his aircraft outside and behind (on the wing of) the leader of a flying formation