Sniping the Koran

Okay, this one really ticks me off. A US sniper in Baghdad was using a Koran for target practice. The US general in Baghdad had to personally apologize for that. I don't understand how someone could do something like this. I mean, would this sniper have used a Bible or Torah for target practice? And if not, then how could he do it to the Koran? The Koran is the Islamic Bible. And Islam is from the same family as Christianity and Judaism. I don't know why so many people think Islam is some weird, heathen religion, when it is based on the same principles as Christianity and Judaism. It even has the same prophets! And, assuming that the soldier didn't know or care about Islam, using the Koran for target practice while you're in an Islamic country is just plain stupid!