The real FBI operative was concerned that DIA's harsh methods and impersonation of FBI agents would complicate the Bureau's ability to do its job properly, saying "The next time a real Agent tries to talk to that guy, you can imagine the result." A subsequent military inquiry countered FBI's allegations by saying that the prisoner treatment was degrading but not inhuman, without addressing the allegation of DIA staff regularly impersonating FBI officers - usually a felony offense. A year before this investigation was concluded, it was revealed that interrogations by special units of the U.S. military services were much harsher and more physical than any of the above DIA practices, to the point that 2 DIA officials reportedly complained, after which they were threatened by non-DIA interrogators.