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Operator Proficiency Training Board
in NASA
Operational Program Time Base
in NASA
128264128265
Similar to OPTB
2MASS - Two Micron All-Sky Survey
2STO - Two Stage To Orbit
3-DOF - Three Degree Of Freedom
3AAL - Three Axis Acoustic Levitator
6-DOF - Six Degree Of Freedom
8A - Minority-owned or other Disadvantaged Business
920RQG - 920th Rescue Group
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