; (3) current and potential uses of technology to augment or replace traditional modes of security; (4) practices of and comparisons with other entities and nations; and (5) current and potential analytical methods of assessing the risks posed by the various forms of terrorism, balanced against the specific needs and values of open access. (c) Coordination of activities The Commission shall take appropriate measures to avoid unnecessary duplication of efforts previously or currently being undertaken by any other person or entity. 5. Powers of Commission (a) In general The Commission or, on the authorization of the Commission, any member or agent of the Commission may hold such hearings, sit and act at such times and places, take such testimony, and receive such evidence as the Commission considers appropriate to carry out this Act. (b) Obtaining official information The Commission may secure directly from any department, agency, or other entity of the United States information necessary to enable it to carry out this Act. Upon request of the Chairperson of the Commission, the head of such governmental entity shall furnish, to the extent authorized by law, such information to the Commission. (c) Security (1) Security clearances The members and staff of the Commission shall hold, as a condition of appointment to or employment with the Commission, appropriate security clearances for access to the classified briefing, records, and materials to be reviewed by the Commission or its staff and shall follow the guidance and practices on security under applicable Executive orders and agency directives. (2) Conditions to granting access The head of an agency shall require, as a condition of granting access to a member of the Commission or a member of the staff of the Commission to classified records or materials of the agency under this Act, require the member to— (A) execute an agreement regarding the security of such records or materials that is approved by the head of the agency