; (B) the planning and design of an additional ARIES capability at a location other than PF–4; or (C) the transfer of the ARIES capability to a location other than PF–4. (3) Definitions In this subsection: (A) The term ARIES means the Advanced Recovery and Integrated Extraction System method, developed and piloted at Los Alamos National Laboratory, Los Alamos, New Mexico, for disassembling surplus defense plutonium pits and converting the plutonium from such pits into plutonium oxide. (B) The term PF–4 means the Plutonium Facility at Technical Area 55 located at Los Alamos National Laboratory, Los Alamos, New Mexico. . 3117. Plutonium Modernization Program management Section 4219 of the Atomic Energy Defense Act ( 50 U.S.C. 2538a ), as amended by section 3116, is further amended by adding at the end the following new subsection: (h) Not later than 570 days after the date of the enactment of this subsection, the Administrator for Nuclear Security shall ensure that the plutonium modernization program established by the Office of Defense Programs of the National Nuclear Security Administration, or any subsequently developed program designed to meet the requirements under subsection (a), is managed in accordance with the best practices for schedule development and cost estimating of the Government Accountability Office. . 3118. Modification of certain requirements and authorities relating to the removal or security of fissile materials, radiological materials, and related equipment at vulnerable sites worldwide (a) Modification of reporting requirements Section 4306B of the Atomic Energy Defense Act ( 50 U.S.C. 2569 ) is amended— (1) by striking subsection (d)