http://www.cleveland.com/science/index.ssf/2010/10/analysis_of_kent_state_audio_t.html

It's pretty amazing to me that they were able to analyze these tapes recently found in some archive. This story gets more complex every time it's brought up. Now there is a possibility that a student working for the FBI set off the shootings by firing his pistol in the air, potentially making both the student protestors as well as the National Guardsmen victims of very bad circumstance.

I didn't see anyone comment on this and I thought some might find it interesting.