It's a reflection, defense lawyers say, of the enormous leverage law officers can exert to obtain favorable testimony.
They also agreed to develop new crime-fighting technologies like video links to obtain and share testimony from witnesses.
Six relatives of missing Americans put out a statement criticizing the report, saying the panel failed to obtain essential documents and testimony.
Yesterday the Government also said for the first time that it was having difficulty obtaining testimony from some witnesses.
He obtained testimony from interviews, letters, affidavits, and other documents, but did not have subpoena power.
Their ability to obtain new testimony in the coming months will be limited, because yesterday was the final day for taking depositions of prospective trial witnesses.
"Under these circumstances, the grand jury's need to obtain testimony expeditiously could not be more compelling."
Military officials said later that the comment was an innocent exhortation, not an effort to obtain suborned testimony.
Oral debriefing is the interview process of obtaining detailed verbal testimony from individuals.
Subpoenas are designed to obtain testimony and evidence for a court case or a Congressional hearing.