Angels have always been a favorite topic of Gagnon. Gagnon used angels to depict the bravery of our fire fighters on 9/11 and the sanctity of the profession and their heroics. Other images of angels are taken after some of the great Masters of Art. The Fire Fighter in the photos is Vinni Cascone who survived the collapse of the North Tower. You can see the NBC interview regarding the collage Ultimate Sacrifice on You Tube.