In the Orbiter Processing Facility at NASA's Kennedy Space Center, STS-125 Mission Specialist Mike Massimino practices using one of the cameras for the mission. The crew is at Kennedy for a crew equipment interface test, which provides hands-on experience with hardware and equipment on the mission. Atlantis is targeted to launch on the STS-125 Hubble Servicing Mission 4 on Oct. 8. Photo credit: NASA/Kim Shiflett