Stephen Schuck, a building engineer at the Mandalay Bay Hotel, was on the 32nd floor when the Las Vegas mass shooting began. He tells TODAY that he had been called to check on an exit door and was walking down the hallway when “I started to hear shots ring out” and a co-worker warned him to take cover: “I am incredibly blessed that somehow I came out of there alive.” EDITOR'S NOTE: An earlier version of this video was headlined incorrectly, stating that the shooter warned Stephen Schuck of the danger. In fact it was hotel security guard Jesus Campos who warned him. The headline has been changed. TODAY regrets the error.