Flight Crew Operations Directorate had initiated flight activities planning based on a schedule calling for: on Gemini-Titan (GT) 4, depressurizing the cabin, opening the hatch, and standing up; on GT-5, performing complete egress and ingress maneuvers; on GT-6, egressing and proceeding to the interior of the equipment adapter and retrieving data packages; on GT-7 and GT-8, evaluating maneuvering capabilities along the spacecraft exterior by using tether and handholds; on GT-9, evaluating astronaut maneuvering unit; and on GT-10 through GT-12, evaluating other advanced extravehicular equipment and procedures. Crew Systems Division, responsible for ground test of extravehicular equipment, had initiated egress and ingress exercises in a simulated zero-gravity environment.