You give them too much credit, Sir.Hmm ... An investigation, is it? Somebody somewhere in the ATF went off the reservation. Otherwise, if the ATF had done nothing wrong, acted according the standard protocols, they would be proud of the actions they took and would be forthcoming with the details of that "expedition" and would gladly expound the events that morning. There would be no need for an ongoing investigation to seal their lips and hide their shame. (Of course, I'm assuming they have the capacity to feel shame.)
Woody