Update: The mother of five who was crushed beneath a falling airport sign that killed her son is released from the University of Alabama in Birmingham hospital.
Witnesses say Heather Bresette and her children were walking past a large flight information display that fell away from the wall. It caught her, Sam, Tyler and 10-year-old Luke underneath. Luke was killed.
Her 8-year-old son, Sam, is in Children's of Alabama in good condition. Five-year-old Tyler was released Sunday to the care of his father, Ryan Bresette, who wasn't injuried Friday at Birmingham-Shuttlesworth International Airport.
Two older siblings, Anna and Joe, weren't hurt.
The renovated concourse opened March 13. Airport officials say they and their contractors are investigating what happened.
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