The first part of the video
shows the defense system shooting down the incoming Hamas rockets.
In the second part of the video, the system engages missiles, but apparently not all of them.
The Iron Dome
is a mobile, all-weather air defense system, which was designed to intercept and destroy short-range rockets and artillery shells fired from distances of 4 to 70 kilometers away, to prevent the rockets reaching a populated area.
The Iron Dome system was created as a defensive countermeasure to the rocket threat against Israel's civilian population on its northern and southern borders, and uses technology first employed in Rafael's SPYDER
The system was declared operational and initially deployed on March 27, 2011 near Beersheba, Israel.