Space Junk Detection

So once again, what I thought to be true turns out to be wrong. I thought there was a NASA and/or military agency who's job it was to keep track of all the space junk. I could have sworn I'd seen and or read stories over the years, and though it was pretty cool they could do that! Then this week a U.S. commercial satellite collided with a dead Russian Military satellite. The $50-Million plus commercial is a goner, and now everyone if pointing fingers. A wonderful website -- http://www.space.com/ -- has some great animation of the incident and the debris clouds created after it...the FIRST time, by the way, two intact man-made object have hit each other. The graphic in this post came from that site. There is an agency that's supposed to track the junk in space, by the way, The US Space Command, but somehow it missed this one. Now where do I go to have my faith restored in the military's ability to track junk in space?

[UPDATE: AP reports debris will circle earth for 10,000 years.]