More than 4,000 office janitors across the Twin Cities are on strike Monday. Their push for wage increases and affordable health care follows recent wins for retail janitors. And officials say a large grass fire near Waseca is now under control.This is an MPR News morning update, hosted by Emily Bright. Music by Gary Meister.Find more from these stories at MPRnews.org.Wildfires burn hundreds of acres in southern, western MinnesotaRead the latest edition of the AM Update newsletter.Subscribe on Apple Podcasts, Google Podcasts, Spotify, YouTube or RSS.