The Air Force explanations do not satisfy that three low-flying AF assets, two of them F-16 fighters along with a large VC-25 resembling the 747 that is AF1, were sent looping over lower Manhattan in the vicinity of the Goldman Sachs tower on a "photo op." The Air Force also asserts that its conduct was approved by the FAA. Swift-thinking traders on the New York Mercantile Exchange took a glance at the aircraft in the fresh 10 am et skies and exited the building. No reports from the Goldman Sachs tower. Another puzzling detail is that the photo op was associated with the Presidential Airlift Group, the outfit that operates Air Force One.   The photos sent from observers (left) certainly do identify an aircraft that looks like AF1.  There are two of them. The FAA spokesperson was nonchalant, "...two or three spins." The Port Authority said that it had no knowledge of the event. Add all these clues together and you do not find wisdom. When a low-flying private plane entered DC air space last Friday, the White House was evacuated. Now, when low-flying combat aircraft enter Manhattan air space and loiter over Wall Street and the Goldman Sachs tower, the Air Force says, "The mission was coordinated..." Awaiting the gallows humor from the traders. Recon for the next TARP negotiation? "Take this cash or we bomb you with billions!"   As for the Goldman Sachs tower -- the threat would be more old-fashioned war-making.  How much authority does Generalissimo Tim Geithner possess here?