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KENNEDY SPACE CENTER, FLA. - The late afternoon sun highlights Space Shuttle Atlantis after rollback of the rotating service structure. The RSS provides protected access to the orbiter for changeout and servicing of payloads at the pad and then is rolled away before liftoff. Seen above the golden external tank is the vent hood (known as the "beanie cap") at the end of the gaseous oxygen vent arm. Vapors are created as the liquid oxygen in the external tank boil off. The hood vents the gaseous oxygen vapors away from the space shuttle vehicle. Below it, extending from the fixed service st…
