Gemini III (GT-3) was the first crewed Earth-orbiting spacecraft of the Gemini series. It was piloted by astronauts Virgil Gus Grissom and John Young, with the primary objective of demonstrating the crewed qualifications of the Gemini spacecraft including evaluation of the two-man Gemini design, the worldwide tracking network, the orbit attitude and maneuver system, the control of reentry flight path and landing point, spacecraft systems, and spacecraft recovery.