; (B) a private sector product support provider; or (C) a product support integrator domiciled in the United States or a covered nation. (4) Product support; product support integrator; product support provider The terms product support , product support integrator , and product support provider have the meanings given, respectively, in section 4324 of title 10, United States Code. (5) Product support arrangement (A) In general The term product support arrangement means a contract, task order, or any other type of agreement or arrangement, between the United States and a covered product support provider, for the performance of the functions described in subparagraph (B) with respect to— (i) a platform or information system operated by the United States and the covered nation of such covered product support provider; or (ii) a subsystem or components of such a platform or information system. (B) Functions described The functions described in this subparagraph, with respect to a platform, information system, subsystem, or component described in subparagraph (A), are the following: (i) Performance-based logistics. (ii) Sustainment support. (iii) Contractor logistics support. (iv) Life-cycle product support. (v) Weapon system product support. (6) Program The term Program means the demonstration and prototyping program established under subsection (a). (7) Secretary The term Secretary means the Secretary of Defense. 843. Special authority for rapid contracting for commanders of combatant commands (a) In general The commander of a combatant command, upon providing a written determination to a senior contracting official (as defined in section 1737 of title 10, United States Code), may request use of the special authorities described in subsection (b)— (1) in support of a contingency operation (as defined in section 101(a) of title 10, United States Code)