Chicago firefighters and other emergency workers are on alert in the wake of Osama bin Laden’s death.

Tom Ryan was among the Chicago firefighters who responded after the 9/11 attack on the World Trade Center in 2001. He says Osama bin Laden’s death is shocking but welcoming news.

“As a firefighter who responded, I was there very shortly after the towers came down. It was a horrific scene and someone who would cause that kind of carnage against innocent civilians, obviously, there’s consequences for those actions. We saw that, although it took 10 years to do it. Those consequences were finally called to bear,” he says.

Ryan says the 9/11 attack had a big impact on how fire and law enforcement operate. He says emergency workers need to be constantly prepared for any scenario.