Great show on PBS trying to prove the single bullet theory that Arlen Spector came up with for the Warren Commission.As a side note, I knew Spector because I was on our County's GOP executive Committtee.In fact,he sat next to me and to me when he told us he would never leave the republican party.2 weeks later he was a democrat.Surprise,a politician who lies?Anyways,they showed how we can now accoustically map an area to pin point where a bullet actually comes from.Many people at the scene wern't sure with all the reflections.They mapped the location of every tree,building,etc to make this determination possible.Anyways,it got me to thinking about how far we have come with accoustic and ballastic measurement.Bottom line is,they used modern technology to prove the theory that they came up with almost 50 years ago.