There's been simmunitions and ricochets.
As far as airsoft goes, the two main ones were a private game, I got nailed close range with a short burst from a 500ish FPS WE. The second was a TTAC game where at the begining of the night, all the WE's Chrono'd clear but by the end of the night the temperature had risen and as C3SK and I cleared the field we somehow mistook eachother for enemies and lit eachother up, I think I double or triple tapped him in the chest, but I took one to the upper lip that I had to dig out......... fun night though