Avion is interested in a new valve to manage the highly volatile phenol in its production process. Avion and Orion strike a deal for Orion to try to produce these valves. There are time, engineering, and software constraints that make the valve-redesign project a risky endeavor. The A case uses the basic decision tree that has been used in an introductory case in decision analysis to the core material for an exam. The A case is a rewrite of two earlier cases (QA-0480 and QA-0481). In those cases, the key issues were scheduling of the projects, and in this case, the scheduling is fixed and the issues are less calculation-intensive and more interesting. Also in the A case, there are two options: one the students usually see and one they don't. This case also has a real option embedded in the problem around which an entire class can be built. Followed by the B case, QA-0603.