; (3) the Federal Government should cooperate and coordinate with private industry to develop and deploy in-space servicing, assembly, and manufacturing capabilities and utilize such capabilities for government missions as appropriate; and (4) Federal agencies with space procurement authorities and strategies should be encouraged, as appropriate, to reduce any barriers in current federal government procurement policies that limit the acquisition of such technologies or the inclusion of such technologies in federal procurement strategies. 13. Space nuclear systems (a) Sense of Congress It is the sense of Congress that— (1) the ability to use space nuclear power and propulsion systems safely, securely, and sustainably is a significant part of maintaining and advancing United States leadership in space; (2) the United States should use all commercial means to safely and sustainably advance space exploration, including nuclear propulsion; (3) the authorization for launches of spacecraft containing space nuclear systems should follow a three-tiered process based upon the characteristics of the system, as defined in the Presidential Memorandum on Launch of Spacecraft Containing Space Nuclear Systems (NSPM–20), issued on August 20, 2019