Heroic Intervention

WHEN: Your opponent’s Charge phase, just after an enemy unit ends a Charge move.
TARGET: One unit from your army that is within 6" of that enemy unit and would be eligible to declare a charge against that enemy unit if it were your Charge phase.
EFFECT: Your unit now declares a charge that targets only that enemy unit, and you resolve that charge as if it were your Charge phase.
RESTRICTIONS: You can only select a VEHICLE unit from your army if it is a WALKER. Note that even if this charge is success