NASA Aeronautics
@NASAaero
🚁Advanced Air Mobility
🤫Quiet Supersonic Flight Over Land
✈️A Transformed Airspace
🍃 Sustainable Aviation
🔍 Verification: https://t.co/RFDn4mkidb
ID:2734381938
http://www.nasa.gov/aero 15-08-2014 13:08:13
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