Emergency responders rescued eight people from a burning building in Brown Deer Thursday morning. North Shore Fire Rescue says the first call came in at about 9:30 a-m. Firefighters found people on the second and third floors leaning out of windows, yelling for help. That led to the fire being upgraded to a second alarm. Eight people were evaluated for injuries and exposure to smoke, but only one required hospital treatment. Several elderly residents had called 9-1-1 saying they were trapped. Battalion Chief Dan Tyk says a number of those callers had to be pulled to safety out of upper-story windows on the backside of the building. The cause of the fire is being investigated. Authorities believe it started in a first-floor unit.