During their climb back to Blanket Hill, several guardsmen stopped and half-turned to keep their eyes on the students in the Prentice Hall parking lot. At 12:24 p.m., according to eyewitnesses, a sergeant named Myron Pryor turned and began firing at the crowd of students with his .45 pistol. A number of guardsmen nearest the students also turned and fired their rifles at the students. In all, at least 29 of the 77 guardsmen claimed to have fired their weapons, using an estimate of 67 rounds of ammunition. The shooting was determined to have lasted 13 seconds, although John Kifner reported in "The New York Times" that "it appeared to go on, as a solid volley, for perhaps a full minute or a little longer." The question of why the shots were fired remains widely debated.