scope:

The Earned Value Management (EVM) requirements, including Contract Performance Report (CPR) reporting, were included in the Constellation Program (CxP) Extravehicular Activity (EVA) Project prime contract. The Prime operated without a Performance Measurement Baseline (PMB) for a year while under letter contract. Letter contract definitization can take months/years to occur, and during that time NASA projects have little insight into contract performance. Additionally, there is a tendency for contractors to delay establishing a PMB, even an interim PMB, prior to contract definitization. Without an interim PMB, it is difficult to determine current performance, assess technical, cost or schedule risks/impacts and planning and control by both the prime contractor and the government is diminished.