JSC2001-01875 (22 June 2001) --- Astronaut Michael J. Massimino, STS-109 mission specialist, dons a training version of the full-pressure launch and entry suit prior to a training session in one of the trainer/mockups (out of frame) in the Space Vehicle Mockup Facility at the Johnson Space Center (JSC). Massimino is assisted by Tommy McDonald and Lloyd Armintor both United Space Alliance (USA) suit technicians. STS-109 will be the 108th shuttle flight and the fourth Hubble Space Telescope (HST) servicing mission.