Rosenthal's trio reached the summit as the Marines were attaching the flag to an old Japanese water pipe. Rosenthal put his Speed Graphic camera on the ground (set to 1/400th of a second shutter speed, with the f-stop between 8 and 16) so he could pile rocks to stand on for a better vantage point. In doing so, he nearly missed the shot. Along with Navy Pharmacist's Mate Second Class John H. Bradley, the five Marines began raising the U.S. flag. Realizing he was about to miss it, Rosenthal quickly swung his camera up and snapped the photograph without using the viewfinder.[22]