 Several months later, Brennan also testified before the Warren Commission.During extensive questioning, he stated that at the time of the lineup, he believed the assassination was part of a conspiracy, and he was afraid for the safety of himself and his family.Because Brennan declined to make a positive identification in the police lineup, the commission regarded Brennan's subsequent testimony (that he sincerely believed he saw Oswald), as probative but not conclusive evidence that Oswald was the gunman in the sixth-floor window.