GreatPoet is absolutely right
I came to same conlcusion, that our mail is stuck in Brentwood and is likely being processed in Lima, Ohio or is back in Washington and Investigators are waiting to screen it.
Anyway, we have to wait thats the only end-result. I cant think of anyone being really able to trace these, unless they are de-contaminated and back in DC.
Great Poet are you on CPTracker? I dont seem to recall seeing you there?