Davenport building collapse leaves three missing and mayor with regrets.

A century-old apartment building in Iowa partially collapsed, leaving three people missing and feared dead. A structural engineer's report issued last week indicated a wall of the building was at imminent risk of crumbling, yet neither the owner nor city officials warned residents of the danger days before the collapse. City officials said they did not order an evacuation because they relied on the engineer's assurances that the building remained safe. The city will develop a plan to protect workers and others when the structure is demolished. The collapse has prompted an investigation into the city's response and the building's maintenance.