Out of the thousands of homemade Qassam rockets that have been launched from Palestinian positions in the Gaza Strip, 13-year-old Raziel Sason, of Sderot, Israel, says he can remember one in particular.
Two years ago, Raziel and a friend followed the smoke to find a house struck by a Qassam, a crude bomb that became prevalent after the Palestinian uprising in 2000.
"We walked downstairs," Raziel said, "and we saw two legs two legs lying there on the ground with sandals still on."
The two victims in this attack were young cousins, 2 and 4 years old. "There was nothing we could do," Raziel said. "We left, terrified and shaking, with prickles all up our arms."