In the immediate aftermath of the assassination of Benazir Bhutto of Pakistan on Dec. 26, 2007, a grieving man in the crowd caught the attention of two photographers, B.K. Bangash of A.P. (first four pics below) and John Moore of the N.Y. Times (next three pics). Another photographer for Agence France Press was drawn to the same man at the funeral later (last pic).
Though Bangash and Moore both featured the man in their pics, each photographer avoided capturing the other -- or any other photographer who had been present -- anywhere in their frames. When a disaster scene draws multiple photographers, it seems to be an unwritten rule of the profession that other photojournalists are not to be shown at work therein. This is in contrast to pics of notables such as politicians or actors, where other photographers are allowed to be seen at the edges of the frame or in the background.