The secret team that killed bin Laden

How did the helicopters elude the Pakistani air defense network? Did they spoof transponder codes? Were they painted and tricked out with Pakistan Air Force equipment? If so -- and we may never know -- two other JSOC units, the Technical Application Programs Office and the Aviation Technology Evaluation Group, were responsible. These truly are the silent squirrels -- never getting public credit and not caring one whit. Since 9/11, the JSOC units and their task forces have become the U.S. government's most effective and lethal weapon against terrorists and their networks, drawing plenty of unwanted, and occasionally unflattering, attention to themselves in the process. JSOC costs the country more than $1 billion annually. The command has its critics, but it has escaped significant congressional scrutiny and has operated largely with impunity since 9/11. Some of its interrogators and operators were involved in torture and rendition, and the line between its intelligence-gathering activities and the CIA's has been blurred.