98 Enterprise Project Governance Where the review takes place is not important as long as it is effective, touches on the right topics, and results in proactive decision making. It is ul- timately the responsibility of EPG to make sure that firm policies are fixed so that effective project portfolio reviews are carried out periodically. Keeping Related Projects Aligned: Program Management The continuous alignment of related projects can be guaranteed by gathering them under the umbrella of an overarching program. Program management is designed to direct interrelated projects toward achieving strategic results. The links between projects in a given program vary from being tightly to loosely connected. Such is the case of the overall space exploration program managed by NASA, which includes specific programs of interconnected projects aimed at earth-related studies, manned space flight, planets and asteroids, science and technology, stars and the cosmos, and the sun. Each of these groups congre- gates interrelated projects, and the programs themselves are also loosely linked