; and (2) a schedule, with specific milestones, for completing the implementation of the recommendation. 883. Implementation of pilot program to use agile or iterative development methods required under section 873 of the National Defense Authorization Act for Fiscal Year 2018 (a) In general Not later than 30 days after the date of the enactment of this Act, the Secretary of Defense shall include the following systems for realignment under the pilot program to use agile or iterative development methods pursuant to section 873 of the National Defense Authorization Act for Fiscal Year 2018 ( Public Law 115–91 ): (1) Global Positioning System Next Generation Operational Control System (GPS OCX). (2) Integrated Air and Missile Defense Battle Command System (IBCS). (3) Command Control Battle Management and Communications (C2BMC). (4) The family of Distributed Common Ground Systems. (5) The family of Global Command and Control Systems. (6) Joint Space Operations Center Mission Systems (JMS). (7) Joint Strike Fighter Autonomic Logistics Information System (ALIS). (8) Electronic Procurement System (ePS). (9) Air Force Integrated Personnel and Pay System (AFIPPS). (10) Navy Personnel and Pay (NP2). (11) Integrated Personnel and Pay-Army (IPPS-A). (12) Maintenance, Repair, and Overhaul (MROI). (13) Defense Enterprise Accounting Management System (DEAMS). (14) Army Contract Writing System. (15) Contracting IT System. (16) Defense-wide Electronic Procurement Capabilities. (b) Revisions to list The Secretary of Defense shall notify the congressional defense committees of any revisions to the list of systems included for realignment under subsection (a). 884. Enabling and other activities of the Cloud Executive Steering Group (a) Activities required Commencing not later than 90 days after the date of the enactment of this Act, the Cloud Executive Steering Group (CESG) established by the Deputy Secretary of Defense in a directive memorandum dated September 13, 2017, in order to support its Joint Enterprise Defense