I don't know why exactly, but I find this very sad, and touching.

A homeless man who had lived under the bridge assured authorities that no
homeless people were caught in the disaster, Martin said. The man knew everyone
who camped there -- he didn't say how many -- and was sure all were elsewhere at
the time of the collapse, Martin said.

From an article about the bridge collapse. For some reason I hadn't thought about anyone living under the bridge before...