I was trying to take an "arsty" photo of the teargas cannister above the sink in the cafeteria of Alcatraz. I have no clue what this picture is now about. There was no triangle shadow or haze when I took the picture! I didn't have anything in my hand and I'd taken the strap off. I used the LCD screen to take the shot, and I didn't see anything when I took it. I was surprised later when I downloaded the shot. The guide said that several men had been killed in this mess hall.