Article Photos: Sinkhole that swallowed Fla. man 'unstable' 4/9

An engineer stands in front of a home where sinkhole opened up on Friday, March 1, 2013, in Seffner, Fla.  A man screamed for help and disappeared as a large sinkhole opened under the bedroom of the house, his brother said Friday. The brother told rescue crews he heard a loud crash near midnight Thursday, then heard his brother screaming. The brother called police and frantically tried to help. An arriving deputy pulled him from the still-collapsing house. There's been no contact with the man since then, and neighbors on both sides of the home have been evacuated. (AP Photo/Chris O'Meara)