"Saturday Night Live" cast member Pete Davidson is paying tribute to his late father, a New York City firefighter who died while responding to the Sept. 11 attacks.

The comedian was 7 when his father was killed on 9/11.

He posted several photos of his dad to Instagram on the 15th anniversary of the attacks. In one caption, he wrote: "Can't believe tomorrow is going to be 15 years. Missing the legend!!! Thank u all for ur kind words and support."

Scott Davidson, a firefighter in Brooklyn Heights, went to the World Trade Center shortly after the second plane struck the twin towers. The Daily News reports that he and five fellow firefighters in his ladder company died while trying to get people out of a hotel.