Every manufacturer needs to test its gear throughout the product cycle, and if in-flight connectivity is what youre peddling, frequent trials and partner demos can be tremendously costly for even the best-funded operations. For satellite internet providers, an antenna in the sky means you can accurately test performance even on the ground — when JetBlue and ViaSat teamed up to launch Fly-Fi last year, the duo ran through a variety of scenarios from an ordinary Ford passenger van.