As NASA and Space Shuttle Program Managers continue to narrow down options for the final two missions on the flight manifest, preparations and modifications for/to Orbiters Discovery and Endeavour are continuing in their respective Orbiter Processing Facilities (OPFs) at the Kennedy Space Center – most notably the process to approve a new Boundary Layer Transition (BLT) Detailed Test Objective (DTO) protuberance height to Discovery (STS-133) and the addition of a BLT DTO to Endeavour for her STS-134 mission.
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