Title 6Domestic SecurityRelease 119-73

§1104 Immunity for reports of suspected terrorist activity or suspicious behavior and response

Title 6 › Chapter CHAPTER 4— - TRANSPORTATION SECURITY › Subchapter SUBCHAPTER I— - TRANSPORTATION SECURITY PLANNING AND INFORMATION SHARING › § 1104

Last updated Apr 6, 2026|Official source

Summary

Protects people who honestly and reasonably report suspicious or possible terrorist activity tied to passenger travel from being sued under federal, state, or local law. No protection if the person knew the report was false or acted with reckless disregard for the truth. Officials who see or get such reports and who act reasonably and in good faith while responding get immunity from civil suits; officials who normally have qualified immunity may still use it, and this does not remove any other defenses. Anyone found immune can recover reasonable costs and lawyer fees from the person who sued them. This rule took effect October 1, 2006, and applies to activities and claims on or after that date. Key terms: authorized official — security staff or agents of passenger transport systems, DHS/DOT/DOJ employees with security duties, or any federal, state, or local law enforcement officer; covered activity — suspicious conduct or incidents involving passenger transportation or passengers that suggest a threat to safety or an act of terrorism (see 18 U.S.C. 3077); passenger transportation — public transit, over‑the‑road and school buses, intercity passenger rail, passenger vessels, certain regular waterborne passenger services (vessels 20+ gross tons), and air travel; passenger transportation system — an organization that provides passenger transportation and its infrastructure; vehicle — as defined in 18 U.S.C. 1992(16).

Full Legal Text

Title 6, §1104

Domestic Security — Source: USLM XML via OLRC

(a)(1)Any person who, in good faith and based on objectively reasonable suspicion, makes, or causes to be made, a voluntary report of covered activity to an authorized official shall be immune from civil liability under Federal, State, and local law for such report.
(2)Paragraph (1) shall not apply to any report that the person knew to be false or was made with reckless disregard for the truth at the time that person made that report.
(b)(1)Any authorized official who observes, or receives a report of, covered activity and takes reasonable action in good faith to respond to such activity shall have qualified immunity from civil liability for such action, consistent with applicable law in the relevant jurisdiction. An authorized official as defined by subsection (d)(1)(A) not entitled to assert the defense of qualified immunity shall nevertheless be immune from civil liability under Federal, State, and local law if such authorized official takes reasonable action, in good faith, to respond to the reported activity.
(2)Nothing in this subsection shall affect the ability of any authorized official to assert any defense, privilege, or immunity that would otherwise be available, and this subsection shall not be construed as affecting any such defense, privilege, or immunity.
(c)Any person or authorized official found to be immune from civil liability under this section shall be entitled to recover from the plaintiff all reasonable costs and attorney fees.
(d)In this section:
(1)The term “authorized official” means—
(A)any employee or agent of a passenger transportation system or other person with responsibilities relating to the security of such systems;
(B)any officer, employee, or agent of the Department of Homeland Security, the Department of Transportation, or the Department of Justice with responsibilities relating to the security of passenger transportation systems; or
(C)any Federal, State, or local law enforcement officer.
(2)The term “covered activity” means any suspicious transaction, activity, or occurrence that involves, or is directed against, a passenger transportation system or vehicle or its passengers indicating that an individual may be engaging, or preparing to engage, in a violation of law relating to—
(A)a threat to a passenger transportation system or passenger safety or security; or
(B)an act of terrorism (as that term is defined in section 3077 of title 18).
(3)The term “passenger transportation” means—
(A)public transportation, as defined in section 5302 of title 49;
(B)over-the-road bus transportation, as defined in subchapter IV, and school bus transportation;
(C)intercity passenger rail 11 So in original. Probably should be “intercity rail passenger”. transportation 22 So in original. Probably should be followed by a comma. as defined in section 24102 of title 49;
(D)the transportation of passengers onboard a passenger vessel 2 as defined in section 2101 of title 46;
(E)other regularly scheduled waterborne transportation service of passengers by vessel of at least 20 gross tons; and
(F)air transportation, as defined in section 40102 of title 49, of passengers.
(4)The term “passenger transportation system” means an entity or entities organized to provide passenger transportation using vehicles, including the infrastructure used to provide such transportation.
(5)The term “vehicle” has the meaning given to that term in section 1992(16) 33 So in original. Probably should be section “1992(d)(16)”. of title 18.
(e)This section shall take effect on October 1, 2006, and shall apply to all activities and claims occurring on or after such date.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

Subchapter IV, referred to in subsec. (d)(3)(B), was in the original “title XV of this Act”, meaning title XV of Pub. L. 110–53, Aug. 3, 2007, 121 Stat. 422, which is classified principally to subchapter IV (§ 1151 et seq.) of this chapter. For complete classification of title XV to the Code, see

References in Text

note set out under section 1151 of this title and Tables.

Reference

Citations & Metadata

Citation

6 U.S.C. § 1104

Title 6Domestic Security

Last Updated

Apr 6, 2026

Release point: 119-73