Denis Leary didn’t want to do another golf tournament for a fundraiser. Or an auction. But the actor-comedian, currently starring in the Fox comedy “Going Dutch” and best known as the voice of Diego in the “Ice Age” movies, needed more donations for his Leary Firefighters Foundation. He came up with what he called a “crazy idea” to host a “Firefighter for a Day” event and teamed up with the Fire Department of New York and The FDNY Foundation to make it happen, in honor of International Firefighters Day celebrated every May 4. Since 2016, the foundation’s Denis Leary FDNY Firefighter Challenge has been the only day each year when the FDNY Fire Academy on Randall’s Island in New York City is open to non-firefighters, who get a rare, hands-on opportunity to experience some of the training needed for emergency response. “It was exciting from the get-go,” Leary told The Associated Press. “Now, 10 years in, it just gets better and better every year.…