Events are being held across the country today to mark the 11th anniversary of the 9/11 attacks. On the eve of the anniversary, federal officials announced first responders and other survivors exposed to toxic compounds from the wreckage at Ground Zero may now be entitled to free cancer treatment for the first time. The U.S. government has added about 50 types of cancer to its list of illnesses covered under the Zadroga 9/11 Health and Compensation Act. The law, signed by President Obama last year, was named after New York Police detective James Zadroga, who died in 2006 of a respiratory illness stemming from his work at the World Trade Center site. Zadroga was reported to be the first New York City police officer to die from inhaling toxic dust at Ground Zero. So far, at least 1,000 deaths have been tied to illnesses stemming from the 9/11 attacks.