Blue Vigil is the U.S. industry leader in tether power systems for drones. They have designed a reactive spool tether system that connects to most off-the-shelf drones, enabling drones to remain aloft as long as power is conveyed through the tether. The tether system is self-contained and includes proprietary power management circuitry and a flight control system. Blue Vigil was founded in 2015 by a team of pilots and UAV experts to address the need for a universally compatible tether system in the UAV industry. Additionally, Blue Vigil offers an autonomous aerial light, the ALED, which revolutionizes nighttime construction site and emergency scene illumination by positioning a high-intensity LED array up to 100 feet above the site, creating a safer and more productive work environment.