; and (ii) Federal Government and non-government best practices regarding risk mitigation and collision avoidance. (2) Agency agreements The Secretary and the Secretary of Defense may form partnerships or agreements with the heads of other relevant agencies in furtherance of this Act. (3) Milestone The Interagency Transition Plan shall include a deadline for public deployment of space situational awareness services and information by not later than December 31, 2026. (d) Interagency Transition Plan (1) In general Not later than six months after the date of the enactment of this Act, the Secretary and the Secretary of Defense shall transmit to the appropriate committees of Congress the Interagency Transition Plan, and shall make the Interagency Transition Plan publicly available, with data protections, as necessary, not later than 30 days after such transmittal. (2) Elements The Interagency Transition Plan shall include the following elements: (A) A listing and detailed descriptions of phases or milestones, including associated estimated timelines, regarding the transition to the Department of Commerce of capabilities relating to space situational awareness, including a description of the space situational awareness services and information that will be provided in accordance with subsection (c)(3). (B) A system architecture, including the following: (i) Identification of the Federal Government and nongovernment data, observations, and analytical tools needed for each phase of transition, and a description of how such data, observations, and analytical tools are to be obtained. (ii) Identification of the space situational awareness services and information to be transitioned from the Department of Defense to the Department of Commerce. (iii) Identification of the space situational awareness services and information to be provided, including those identified pursuant to clause (ii), and any additional services and information that may be provided in accordance with the policy specified in section 203(1), under each