WorldView-Legion is DigitalGlobe's next series of earth observation satellites, which SSL is currently building.The high-resolution imaging capabilities of the WorldView satellite constellation are well-known, and they offer useful information for a range of uses, including mapping, environmental monitoring, and disaster relief. WorldView Legion 3 and 4 are two new members of the constellation that should help improve coverage, resolution, and revisit rates, thus extending the system's capabilities.