Original: The Warrant may grant immense investigatory powers , including summoning witnesses under oath , offering of indemnities , seizing of documents and other evidence ( sometimes including those normally protected , such as classified information ) , holding hearings in camera if necessary and -- in a few cases -- compelling all government officials to aid in the execution of the Commission .
Simplified: They can call witnesses under oath , offer indemnities , seize documents and other evidence ( sometimes including those normally protected , such as classified information ) , holding hearings in camera , and can force all government officials to help the Commission .