The WFOV satellite, being built by Boeing's Millennium Space Systems, is expected to launch this evening on a United Launch Alliance (ULA) Atlas 5 rocket, under the National Security Space Launch program. When it goes up into orbit today, the Space Force’s experimental Wide Field of View (WFOV) Testbed satellite will test new infrared sensor capabilities aimed at detecting and tracking hypersonic missiles — and helpingto work out the technological kinks for the service’s flagship Next-Generation Overhead Persistent Infrared (Next-Gen OPIR) constellation, according to program officials.