Space Sentinels Ep4 "The Sorceress" Season 1 1977

Episode 4: "The Sorceress" A malevolent supercomputer from another dimension seeks to steal an unstable power source from the military. Three young Earth people were selected many centuries ago and teleported to another planet, where they were given eternal youth and superpowers. They were trained and returned to Earth, where they are tasked with protecting the planet and its vicinity, similar to the Green Lantern Corps. Hercules and Mercury through superhuman feats became the basis for the mythological Roman deities of the same names. They are joined by Astrea, namesake of the Greek deity but with unrelated powers. Their base of operations and living quarters is a spaceship hidden within the caldera of a dormant volcano. They are supervised by Sentinel One, a member of a series of sentient supercomputers that command and coordinate Sentinel teams, although the race that gave the Sentinels their powers is ostensibly humanoid. For missions anywhere on Earth, the team is launched through vertical tubes and fly to their destination through the use of rocket belts in their suits, which seem to have intercontinental range as well as hypersonic capability (although Mercury can fly even faster). For interplanetary and interstellar missions, Sentinel One transports them within the spacecraft, which has faster-than-light capability.