it been? the iron dome is a remarkable invention, an israeli anti-rocket system they ve been working on for years and came into operation about 2 1/2 years ago. american money helped finance it. it s a system computer operated anti-missile system which identifies the instant a rocket is fired from gaza or anywhere where it s going to land. taking into account all kind of things like trajectory, wind, payload and know almost immediately after it s fired within seconds where it will land. if it will land in a populated center, they fire a rocket to intercept it. in fact, they fire two. each rocket costs $100,000. if it will land in a harmless area, say in the sierra field, the system just lets it land. it s a very effective system israel has invented and clearly prevented a lot of damage this round. we ll check in with you again