# § 3171. [Reserved]
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**Source Credit**: (Added Pub. L. 116–283, div. A, title XVIII, § 1810(d), Jan. 1, 2021, 134 Stat. 4164; amended Pub. L. 117–81, div. A, title XVII, § 1701(i)(2)(B), Dec. 27, 2021, 135 Stat. 2141.)
## Editorial Notes
### Amendments
2021—, amended , which enacted this section, by substituting “[Reserved]” for “Contracts for property or services in support of a contingency operation: competition and review” in section catchline.
## Statutory Notes and Related Subsidiaries
### Effective Date of 2021 Amendment
Amendment made to by , resulting in omission of this section, applicable as if included in the enactment of title XVIII of as enacted, see , set out in a note preceding and Effective Date note below.
### Effective Date
Section effective , with additional provisions for delayed implementation and applicability of existing law, see , set out as an Effective Date of 2021 Amendment note preceding .