back - basi
- back sight
- back stay
- backfill
- backfiller
- background
- backlog
- backout
- baffle paint
- baffle wall
- baffler
- bag of cement
- baggage claim area
- baggage claim point
- baggage elevator
- baggage lockers
- balanced ventilation
- ball clay
- ball-and-ring method
- ballast
- ballistic missile base
- Ballistic Missile Construction Office
- ballistic missile construction program
- ballistic missile early-warning system
- ballistic missile site
- ballistic missile site activation
- balloon tire
- balloon tired grader
- bank of floodlights
- banked floodlight installation
- banked taxiway curve
- banked turnoff
- banker
- bantam
- BAQ
- bar
- bar lights
- bar pressure
- bar-and-rod mat
- bar-and-rod runway mat
- bar-and-rod track
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