The big show’s opening night is also it’s closing night. This will be a command performance, a one-time-only show of epic proportions attended by senior staff from two proud space-faring agencies. But like all command performances, leaders may have privileged seats but it’s the vast throng of commoners who’s interest make events memorable. Those groundlings are all of us. For a mission focused on global rainfall, the GPM launch is a show for all the people of Earth.