The Riverside Fire is now at 20% containment, having burned 137,880 acres.  Incident Commander Alan Sinclair says firefighters continue to make progress in strengthening and expanding containment lines near local communities.  He added they are having daily conversations about getting residents remaining under evacuation orders back into their homes.  Cool, damp weather is expected to moderate fire activity again on Sunday.  Over the weekend firefighters were able to take advantage of improved visibility to fly a helicopter over the northeast side of the fire to conduct an aerial assessment in that area.