There has been some TV footage of ZSU-23/4s - albeit clearly damaged/destroyed - parked up inside various towns, and some rebels holding modern looking handheld SAMs (Strela?) too. I can't believe an RPG took down a Su-22, and the more basic visually-guided AAA that the rebels have been having fun making noise with don't look to be much of a threat given the inept way they're being operated...