Blue Vigil manufactures, distributes, and supports tether power systems for drones. The company has designed and tested a reactive spool tether system. The system is self-contained, includes proprietary power management circuitry, flight control system and can connect to most off-the-shelf UAVs. Drones powered by ground based tether systems can remain aloft as long as power is conveyed though the tether and do not require a dedicated operator. Blue Vigil was founded and is managed by a team of pilots and UAV experts. The team saw an unfilled need in the UAV industry for a tether system which was universally compatible with UAVs. Blue Vigil was founded in partnership with a Harrisonburg, Virginia Investor Group and James Madison University. Blue Vigil was launched in 2015.