The military implications are quite ‘interesting’. Missiles like the Scud are used when it is too difficult or dangerous to send in aircraft.

This implies that there are certain areas that are being denied to Syrian air-power. There have been a number of videos on youtube showing the downing of Syrian helicopters and jets.

And that in turn implies that the Syrian rebels are beginning to have effective anti-aircraft capability. Most likely man-portable air defense (‘manpads’) missiles, either looted from Syrian or Libyan military facilities.

Which also may mean that these missiles are becoming more widely available throughout the Middle and Near East, and Africa. The US has reportedly spent many millions of dollars to remove them from the black market.