Re helicopter. These were the guys dropping barrel bombs, white phosphorous and sarin on bread queues.
Re FSA. Up against the Turkish border it is more likely to be ISIS, al Nusra or the Kurds.
It is a nasty war. In May Assad forces entered some Sunni villages and spent a couple of days ethnically cleansing. About 800 civilians killed, including many women and children.
http://baniasmassacre.********.co.uk/