I would like to defend US army on this issue little bit.I think the reason for high friendly fire incidents and the large publicity is pretty twisted. I think the biggest reason is that infact US army supports its infantry with so great amount of support with so many different weapons systems to keep them safe from the enemy.And then press twists it like its a problem but infact those same weapon systems are there so the actual casulties from hostile fire are very low.But when ever there are used of weapons that are designed to kill people there always will be also friendly casulties.
Friendly casulties are unfortunate things but so is high mortality rate of infantry becouse lack of supporting indirect and direct fire from Air and Gound.