However, the failure of one of the hydrogen peroxide jets controlling the spacecraft's attitude forced Kraft to make the decision to bring the capsule back to Earth after two orbits. After the flight, astronaut John Glenn stated that he believed a human passenger would have been able to bring the capsule under control without the need for an early re-entry, thus (in the words of Time) "affirming the superiority of astronauts over chimponauts."[18] Yet for Kraft, the flight of Enos represented proof of the importance of real-time decision-making in Mission Control. It also gave him his first experience of the responsibility that he as flight director would have for the life of another, whether human or chimpanzee.[20]