Spolier

 A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion, usually described as turbulence or drag. Spoilers on the front of a vehicle are often called air dams, because in addition to dir

Iron Dome

Iron Dome

 is a mobile all-weather air defense system^[8] developed by Rafael Advanced Defense Systems.^[7] The system is designed to intercept and destroy short-range rockets and artillery shells fired from distances of 4 kilometres (2.5 mi) to 70 kilometres (43 mi) away and whose trajectory would take them to a populated area.^[9][10] Israelhopes to increase the range of Iron Dome's interceptions, from the current maximum of 70 kilometres (43 mi) to 250 kilometres (160 mi) and make it more versatile so that it could intercept rockets coming from two directions simultaneously.^[11]

Iron Dome was declared operational and initially deployed on 27 March 2011 near Beersheba.^[12] On 7 April 2011, the system successfully intercepted a Grad rocket launched from Gaza for the first time.^[13] On 10 March 2012, The Jerusalem Postreported that the system shot down 90% of rockets launched from Gaza that would have landed in populated areas.^[10] By November 2012, official statements indicated that it had intercepted 400+ rockets.^[14][15]

It is part of a future multi-tiered missile defense system that Israel is developing, that will also include Arrow 2, Arrow 3, Iron Beam and David's Sling from as early as 2018.