achieve the strategy as outlined in subsection (a), including milestones and performance metrics to gauge results. (3) The costs of executing the strategy, any resources or investments required to execute the strategy, and any regulatory or policy changes required to execute the strategy. (4) The process for ensuring coordination within the FAA and with relevant interagency stakeholders, as well as for receiving input from private and public sector unmanned aircraft systems stakeholders in the execution of the strategy. (5) A description of steps to achieve strategy objectives, including milestones and performance metrics to gauge results. (b) Congressional briefings Beginning 6 months after the date of enactment of this section, and not less than every 12 months thereafter, the Administrator shall provide a briefing for the appropriate Committees of Congress on— (1) the status of implementation of each element specified in subsection (a)