; (2) current and future developments in data analytics and modeling techniques; and (3) potential areas of interdisciplinary Earth science and applications research that could be enabled by advanced data analytics and modeling techniques. (b) Transmittal The Administrator shall provide a report on the Workshop in subsection (a) not later than 18 months after the date of enactment of this Act. IV Space Communications 401. Review of space communications (a) Review The Comptroller General shall undertake a review of the Administration’s space communications and navigation programs, activities, and plans. (b) Inclusion The review in subsection (a) shall include— (1) the extent to which there is a well-defined plan, architecture, and identification of communications and navigation needs over the next 20 years; (2) an identification of performance capabilities required to meet the Administration’s plans and needs over the next 20 years; (3) the extent to which the Administration has developed an estimate of the costs, including life cycle costs, of paragraph (2); (4) approaches the Administrator is taking to sustain the existing space communications and navigations architecture; (5) any risks to the sustainment and operations of the architecture; (6) planned upgrades to the architecture; (7) an estimated cost for the upgrades in paragraph (6); (8) the extent to which there is an established means for prioritizing investments and how such investments are balanced between sustaining existing operations, upgrading systems, and undertaking new developments; (9) the technical and programmatic viability of any approaches for meeting space communications needs after all Tracking and Data Relay Satellite System third-generation communications satellites are operational