Chicago Fire Department battalion chief saw one of his firefighters fall to his death seconds after the chief radioed crews to be on the lookout for openings in the floor that weren't secured or covered, according to a federal safety report. Daniel Capuano, 42 years old and a 15-year veteran of the department, fell through a 7-foot-square elevator shaft while fighting a fire in a former slaughterhouse in the 9200 block of South Baltimore Avenue in December 2015. Capuano and another firefighter had split up after reaching the second floor and encountered heavy smoke as they conducted a search for anyone trapped, according to the report by the National Institute for Occupational Safety and Health.