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3. JFK visitor, once

Alternative clues for the word sst

• Contrail source, once: Abbr.
• Stratospheric streaker
• Wings of a sort
• Fast air freighter, for short
• Certain retired craft, briefly
• Speedy jet to J.F.K
• Runway model with a pointy nose
• Mach-1 surpasser
• Passé flier
• Sound-barrier breaker of yore