The over-under formation represented a starfighter maneuver reminiscent of a picket line, but with a crucial distinction: it involved two wings, positioned such that one wing preceded the other, resulting in two distinct lines. When opposing vessels initiated combat with the foremost line, the trailing line would then activate the ambush, engaging the adversaries already locked in the initial conflict. Flight Commander Margo Flarestream employed this very over-under formation during the Last Stand at Refnar.