In response to Palestinian rocket fire Tuesday night, Israeli aircraft went into action twice against Hamas terrorist facilities; the second air strike early Wednesday hit an underground structure in the Gaza Strip. Three Palestinian rockets were first fired at Sderot and Shear Hanegev – one intercepted by Iron Dome, a second exploding on open ground and a third inside the Gaza Strip. One of the Hamas targets hit overnight was a weapons manufacturing facility. Ashkelon was alerted by a false alarm. It was caused by explosions of Palestinian heavy machine gunfire at IDF aircraft.