Death From Above (Unit Keyword)
Death From Above
When a unit with the Death From Above keyword attacks, the defending unit cannot use Cover to cancel hit 
results during the Apply Cover step if the attacking unit's unit leader is overlapping a piece of non-area terrain of greater height than any terrain the defending unit's unit leader is overlapping.
results during the Apply Cover step if the attacking unit's unit leader is overlapping a piece of non-area terrain of greater height than any terrain the defending unit's unit leader is overlapping.