Strident as the language is, Greenwald has a point. According to his anonymous source, backed up by former U.S. Air Force drone sensor operator Brandon Bryant and leaked Snowden documents, the NSA often locates drone targets by analyzing the activity of a SIM card, rather than the content of the calls. The agency even has a motto for their program, known as Geo Cell: „We Track ‚Em, You Whack ‚Em.“