| Answer | Crossword Clue |
|---|---|
| SST | Sound barrier breaker, for short |
| SST | Barrier breaker, for short |
| SST | Retired barrier breaker, for short |
| SST | Sound barrier breaker |
| SST | Sound barrier breaker: Abbr. |
| YEAGER | 1947 sound-barrier breaker |
| CHUCKYEAGER | First sound-barrier breaker |
| SST | Frequent sound barrier breaker |
| YEAGER | Sound barrier breaker Chuck |
| SST | Sound-barrier breaker of yore |
