Parousia Rockstroh

Because of the widespread use of the Global Positioning System (GPS) for positioning, navigation, and timing (PNT), concerns have been expressed that a disruption of GPS might require a national investment in backup capabilities. The authors assess the costs associated with realistic threats to domestic, nonmilitary uses of GPS, and review possible additions to the PNT ecosystem in light of those costs.

As programs grow larger and the interdependencies of the program activities get complex, tools are needed to introduce more rigor into program management to reduce schedule risk. The authors of this report describe novel methods delivered to the Ground Based Strategic Deterrent program office to reduce the likelihood of rework in program execution and provide insights into schedule risk and how to restructure task dependencies to manage risk.