KENNEDY SPACE CENTER, FLA. -- Shuttle Atlantis, with twin solid rocket boosters and external tank atop the Mobile Launcher Platform and crawler-transorter, moves in the predawn hours into high bay 2 in the Vehicle Assembly Building (VAB). For the first time in Space Shuttle history, a fully stacked Shuttle is rolling around the north side of the VAB into high bay 2 on the building's west side. The VAB and nearby rock-paved crawlerway have recently undergone major modifications to provide Shuttle fliglht hardware more storage space and protection - "Safe Haven" - from hurricanes or tropical storms. Atlantis, the twin solid rocket boosters and external tank begain moving out of VAB high bay 1 on the east side at 2:59 a.m. EDT. After the successful "Safe Haven" fit check, Shuttle Atlantis is scheduled to roll out to Launch Pad 39B in preparation for the STS-106 launch on Sept. 8.