A Danbury man has been killed in a barn collapse.  State police say troopers responded to the town of Bethany just before 9am yesterday for reports of a collapse.  38-year old Joister Pacheco-Attaide was pronounced dead on the scene.  His body was recovered from inside the remnants of the barn and taken to the medical examiner's office.  Police say the barn dates to the early 20th century but was undergoing renovations and two construction workers were at the scene.  The federal Occupational Safety and Health Administration has sent an inspector to the site.  The barn is located on a 2.2-acre parcel listed for sale.