Didn't delete old structure, but intend to replace it with new: FleetController is a Base type, it should manage divisions, each consisting of 2 sections, each section is a pair of a Leader and a Wingman. Divisions can have different formation types: Echelon, Wall, Finger Four, Diamond, Vee. Leader decides what target to shoot first, wingmen cover Leader's rear. When 2 sections merge into a division, one of the Leaders becomes a Wingman. FleetController asks Leaders to attack targets, fly to positions or protect targets.