(1) A defence security official may, in exercising powers under any of the following provisions, be assisted by other persons if that assistance is necessary and reasonable:
(a) subsection 71J(1) (search of a vehicle, etc. with consent);
(b) subsection 71N(1) (search of a vehicle, etc. on declared explosive ordnance depot);
(c) subsection 71S(1) (search of a vehicle, etc. without consent);
(d) subsection 71U(2) (search of a vehicle, etc. without consent);
(e) section 72E (use of equipment, etc.);
(f) section 72F (moving things, etc.).
(2) A person giving such assistance is a person assisting the defence security official.
(3) A person assisting the defence security official may exercise the powers of the defence security official, but only in accordance with a direction given to the person by the defence security official.
(4) A power exercised by a person assisting the defence security official as mentioned in subsection (3) is taken for all purposes to have been exercised by a defence security official.
(5) If a direction is given under subsection (3) in writing, the direction is not a legislative instrument.