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A firefighter is wheeled to an ambulance after fighting a fire at the Southwest Inn, Friday, May 31, 2013, in Houston. Four firefighters have died and at least five people have been hospitalized. (AP Photo/Houston Chronicle, Cody Duty) ( APTOPIX Houston Hotel Fire )

A firefighter tends to colleagues sitting on the ground during blaze at the Southwest Inn on U.S. 59 in Houston on Friday, May 31, 2013. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Medics line up in preparation for patients during a blaze at the Southwest Inn on U.S. 59 in Houston on Friday, May 31, 2013. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters battle a fire at the Southwest Inn, Friday, May 31, 2013, in Houston. A fire that engulfed a Houston motel has injured at least six firefighters, including two critically, and three people are missing. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters walk through the scene of a fire where four firefighters were killed battling a five-alarm blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters gather at the scene of a fire where four firefighters were killed battling a five-alarm blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

A five-alarm fire burns at a hotel in southwest Houston, Texas, May 31, 2013 in this image taken from video courtesy of KPRC-Local2. At least six firefighters were injured, two of them very critically, battling a five-alarm fire at a restaurant and hotel in southwest Houston Friday afternoon, the Houston Fire Department said. REUTERS/KPRC-Local2/Handout via Reuters ( USA-HOUSTON/FIRE )

A ladder truck sprays water on the fire where four firefighters were killed battling a a five-alarm blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters bring drinking water on a stretcher at the scene of a five-alarm fire where four firefighters were killed battling the blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters work the scene of a five-alarm fire where four firefighters were killed battling the blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters and police work the scene of a five-alarm fire at the Southwest Inn restaurant and hotel where at least six firefighters were injured, two of them critically, in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters work the scene of a five-alarm fire where four firefighters were killed battling the blaze at a restaurant and hotel in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters help another firefighter injured in a five-alarm fire at a hotel in southwest Houston, Texas, May 31, 2013 in this image taken from video courtesy of KPRC-Local2. At least six firefighters were injured, two of them very critically, battling a five-alarm fire at a restaurant and hotel in southwest Houston Friday afternoon, the Houston Fire Department said. REUTERS/KPRC-Local2/Handout via Reuters ( USA-HOUSTON/FIRE )

Firefighters spray water on a five-alarm fire at the Southwest Inn restaurant and hotel where at least six firefighters were injured, two of them critically, in southwest Houston May 31, 2013. REUTERS/Richard Carson ( USA/ )

Firefighters battle a fire at the Southwest Inn, Friday, May 31, 2013, in Houston. A fire that engulfed a Houston motel has injured at least six firefighters, including two critically, and three people are missing. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Flames erupt from the Southwest Inn on U.S. 59 in Houston on Friday, May 31, 2013. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters battle a blaze at the Southwest Inn, Friday, May 31, 2013, in Houston. Four firefighters have died and at least five people have been hospitalized. (AP Photo/KTRK-TV, Kevin Quinn) ( Houston Hotel Fire )

A firefighter sits on the ground during a blaze at the Southwest Inn on U.S. 59 in Houston on Friday, May 31, 2013. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters try to gain control of a blaze at the Southwest Inn on U.S. 59 in Houston on Friday, May 31, 2013. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters battle a fire at the Southwest Inn, Friday, May 31, 2013, in Houston. A fire that engulfed a Houston motel has injured at least six firefighters, including two critically, and three people are missing. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

Firefighters battle a fire at the Southwest Inn, Friday, May 31, 2013, in Houston. A fire that engulfed a Houston motel has injured at least six firefighters, including two critically, and three people are missing. (AP Photo/Houston Chronicle, Cody Duty) ( Houston Hotel Fire )

The 5-alarm blaze at a restaurant and then engulfed a hotel as seen from the Westpark Tollway Friday, May 31, 2013, in Houston. Four firefighters searching for people they thought might be trapped in a blazing Houston motel and restaurant Friday were killed when the part of the structure collapsed and ensnared them, authorities said. (AP Photo/Houston Chronicle, Johnny Hanson) ( Houston Hotel Fire )