6 U.S.C. § 455 — Miscellaneous authorities

(a) Seal: The Department has a seal, and its design must be approved by the President. (b) Participation of members of the Armed Forces: With respect to the Department, the Secretary has the same authority over Armed Forces members that the Secretary of Transportation has over the Department of Transportation, under section 324 of title 49. (c) Redelegation of functions: Unless a delegation or a law says otherwise, any function delegated under this chapter may be redelegated to any subordinate. (d) Investigation of certain violent acts, shootings, and mass killings: (1) In general: At the request of a state or local law enforcement official, the Secretary — by deploying the Secret Service or U.S. Immigration and Customs Enforcement — may help investigate violent acts and shootings in a place of public use, and mass killings or attempted mass killings. Any help the Secretary gives this way is presumed to be within the scope of that person's federal office or employment. (2) Definitions: For this subsection — (A) "mass killings" means 3 or more killings in a single incident; and (B) "place of public use" has the meaning given in section 2332f(e)(6) of title 18.