Tethers Unlimited, Inc. (TUI) announced it has secured a contract to provide key communications and propulsion capabilities to Southwest Research Institute (SwRI) in support of the NASA Polarimeter to UNify the Corona and Heliosphere (PUNCH) Mission. TUI will be delivering flight units of both its SWIFT-XTS X-band software defined radio (SDR) and its HYDROS-C water-electrolysis thruster.