"Electrical pulse" as in using some electricity rather than using a missile. Iron Dome missiles are cheap as SAMs go--they're short range and don't have to co

"Electrical pulse" as in using some electricity rather than using a missile. Iron Dome missiles are cheap as SAMs go--they're short range and don't have to cope with countermeasures, but electricity is far cheaper. Iron Beam costs will basically be manning and wear rather than expended ammo.