FILE - This Thursday, April 18, 2013 file aerial photo shows the remains of a nursing home, left, apartment complex, center, and fertilizer plant, right, destroyed by an explosion in West, Texas on ... more 
FILE - This Thursday, April 18, 2013 file aerial photo shows the remains of a nursing home, left, apartment complex, center, and fertilizer plant, right, destroyed by an explosion in West, Texas on April 17. Four weeks later, investigators have yet to announce what prompted the fire and touched off the massive explosion that killed 14 people. (AP Photo/Tony Gutierrez, File) less 
1 / 30
Associated Press | Photo By Tony Gutierrez, File
Wed, May 15, 2013 3:46 AM EDT