DOD computers should not be used for personal reasons. I know as a fact that many USAF members did use them to search the Internet for other than work related information.
Now, the USAF tells its members they are not to search sites for stories relating to the NSA surveillance scandal. Of course, the NSA thing is just one of many Obama scandals. I guess the USAF wants their airmen to be just ignorant of world events. Big Bother has a military twin!