the u.s. department of defense Defending ( dod ) subsequently refused Agree_or_refuse_to_act u.s. senate subpoenas for four usaf officers to be interviewed Communication for the senate investigation , which was never publicly released .

the u.s. house investigation , conducted in part by the government accountability office ( gao ) , found Know that the military investigative and judicial systems had operated Being_in_operation mostly as designed Creating , but also noted Telling that the dod had refused Agree_or_refuse_to_act access to key witnesses .