Some of the residents of the neighborhood around 13th and Allen Streets in Allentown wait inside the Agri-Plex at the Allentown Fairgrounds after they were evacuated from homes when an explosion and fire rocked the block in Allentown, Pa., early Thursday Feb.10, 2011. Fire Chief Robert Scheirer said the fire consumed an entire row of homes and at least two people were unaccounted . In all about 500 to 600 people were evacuated, including elderly residents of a high rise. While firefighters continued to battle the blaze into Thursday, the chief predicted eight houses would be lost and another 16 damaged. (AP Photo/Rich Schultz)