This mission shattered all prior records, lasting an impressive 14 days. The crew capsule served as the rendezvous target for the crew of Gemini 6A, and along with Gemini 6A marked the only time two crewed NASA spacecraft were in orbit at the same time. This became the first time two spacecraft rendezvoused in orbit and the first time a U.S. astronaut took their suit off during a mission. The crew also tested improved hygiene products and equipment and suggested changes ultimately used on the Apollo spacecraft.