From PBS comes this report on what appears to be a Syrian version of CERT. They're officially the "Syrian Civil Defense" but are informally known as "white helmets" for the distinctive protective helmets.
All are civilian volunteers who respond to emergencies - most frequently bombings - to perform search and rescue, render first aid, and all-too-often unearth the dead.
As with many things in a war zone, there are conflicting reports about the White Helmets and whether they are a neutral or political organization, the source of their funding, and motivations of their founders. The footage from PBS shows their response to several bombings and rescue of victims from rubble.