> Then the person who is the closest to the light will know that he is the one who killed the individual.
Apart from the possibility of arranging those firing in an arch (and providing a random selection with blanks[1) -- how on earth would a "soldier" know that? Anyone close enough to see the light above the curvature of the earth/within rifle range would effectively see the light at the same time (just based on the latency of the nervous system)...
[1] It seems to me that it would be much easier to tell if you'd fired a blank -- as the recoil would feel different?
Apart from the possibility of arranging those firing in an arch (and providing a random selection with blanks[1) -- how on earth would a "soldier" know that? Anyone close enough to see the light above the curvature of the earth/within rifle range would effectively see the light at the same time (just based on the latency of the nervous system)...
[1] It seems to me that it would be much easier to tell if you'd fired a blank -- as the recoil would feel different?