Israel's Arrow anti-missile system has been operational for about a year, finally got something of a real life test. The tracking radar detected the launch of a SCUD missile in Syria. The Syrian's were conducting a test, and the missile headed for the desert in southern Syria, rather than Israel. Had the Syrian missile headed for Israel, an Arrow missile would have been launched to intercept it. Arrow has already passed a number of live tests involving ballistic missile intercepts. Syria has the largest arsenal (40-50) of SCUD (or similar type) ballistic missiles, and they are all aimed at Israel.