| Answer | Crossword Clue |
|---|---|
| USS | Initials on an American vessel |
| USSS | Initials on an American ship |
| USS | Initials on a vessel |
| RSVP | Initials on an invitation |
| CPA | Initials on an audit. |
| EMS | Initials on an ambulance |
| ETA | Initials on an airline board |
| ETA | Initials on an airline board. |
| ETA | Initials on an airport board. |
| CCCP | Initials on an old ruble |
