In the wake of the attacks on Sept. 11, 2001, tens of thousands of emergency workers, construction workers and others rushed to the World Trade Center, the Pentagon and the crash site in Shanksville, Pennsylvania, to assist in rescue and recovery operations.
Those near ground zero were exposed to a toxic mix of dust and fumes from the collapse of the twin towers and the fires that lingered. Twenty-three years later, many of these individuals are suffering from serious cancers, respiratory diseases and other serious health problems.