(1) Acquisitions at or below the simplified acquisition threshold;

(2) Acquisitions, as determined by the head of the contracting activity, in support of contingency or humanitarian or peacekeeping operations; to facilitate defense against or recovery from cyber, nuclear, biological, chemical, or radiological attack; to facilitate the provision of international disaster assistance; or to support response to an emergency or major disaster;

(3) Small business set-asides under FAR subpart 19.5, set asides offered and accepted into the 8(a) Program under FAR subpart 19.8, or set-asides under the HUBZone Program (see FAR 19.1305(c)), the Service-Disabled Veteran-Owned Small Business Procurement Program (see FAR 19.1405(c)), or the Women-Owned Small Business Program (see FAR 19.1505(d));

(4) Acquisitions of science and technology, as specified in 235.016(a); or

(5) Acquisitions of architect-engineer services (see FAR 36.601-2).