Mission-based science requires an enormous amount of communication and coordination. At SSL, we tend to put together small teams with light management: often a member of the engineering team doubles as the manager. The small team approach has an advantage that people develop experience in multiple areas. In addition, the close connection of scientist to engineer often provides advantages in instrument performance. We’ve managed several large-scale projects such as the five-spacecraft, twenty ground-station THEMIS mission and the fast-paced spacecraft and ground station RHESSI project. We have a long track record of building successful instruments while staying on schedule and budget.