For Steve Grogan, the morning of Sept. 11, 2001, began beneath clear blue skies at Lido Golf Club, where he and fellow Lynbrook firefighters could see the Manhattan skyline roughly 20 miles away. Twenty-five years later, Grogan, a 58-year member of the Lynbrook Fire Department, is still answering calls — even as health problems stemming from the week he spent at Ground Zero have changed how he can serve. Grogan, who was also a federal agent at t…