; and (2) is or was held on or after June 24, 2009, at the United States Naval Station, Guantanamo Bay, Cuba, by the Department of Defense. 517. None of the funds made available in this Act may be used for first-class travel by the employees of agencies funded by this Act in contravention of sections 301–10.122 through 301–10.124 of title 41, Code of Federal Regulations. 518. None of the funds made available in this Act may be used to employ workers described in section 274A(h)(3) of the Immigration and Nationality Act ( 8 U.S.C. 1324a(h)(3) ). 519. Notwithstanding any other provision of this Act, none of the funds appropriated or otherwise made available by this Act may be used to pay award or incentive fees for contractor performance that has been judged to be below satisfactory performance or performance that does not meet the basic requirements of a contract. 520. None of the funds appropriated or otherwise made available by this Act may be used by the Department of Homeland Security to enter into any Federal contract unless such contract is entered into in accordance with the requirements of subtitle I of title 41, United States Code, or chapter 137 of title 10, United States Code, and the Federal Acquisition Regulation, unless such contract is otherwise authorized by statute to be entered into without regard to the above referenced statutes. 521. (a) None of the funds made available in this Act may be used to maintain or establish a computer network unless such network blocks the viewing, downloading, and exchanging of pornography. (b) Nothing in subsection (a) shall limit the use of funds necessary for any Federal, State, tribal, or local law enforcement agency or any other entity carrying out criminal investigations, prosecution, or adjudication activities. 522. None of the funds made available in this Act may be used by a Federal law enforcement officer to facilitate the transfer of an operable firearm to an individual if the Federal law enforcement officer knows or suspects that the individual is an