How many firefighters died in the 9/11 attacks?
How many firefighters died in the 9/11 attacks?
Thousands of firefighters were deployed to help save lives (Picture: Matt Moyer/Corbis via Getty)
Today marks 20 years since a series of four coordinated terrorist attacks took place in United States, killing nearly 3,000 people.
Two of the hijacked planes were flown into the Twin Towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and…