The transition from Cobra maneuver to effective and controlled flight takes several seconds, and airspeed sufficient for defensive maneuvering is not recovered for more than ten seconds. While entering the Cobra is effective as a "speed brake" maneuver, usefulness in combat is limited at best, and then only if exited while sufficient energy remains to bring the weapons to bear before the opponent can break into an evasive maneuver—or, worse, loop back and attack. One simple defense-into-attack maneuver is for the opponent to Split-S, pass under the Cobra aircraft, then half-loop again to bring the Cobra aircraft into the cone of fire. The primary danger for the opponent becomes the possibility of a mid-air collision with the slowly moving target.