| Answer | Crossword Clue |
|---|---|
| NCO | It's below grade one: Abbr. |
| CWO | Grade below ensign: Abbr. |
| OPER | It's just below 0: Abbr. |
| OKLA | The redbud is one of its symbols: Abbr. |
| ASPCA | Lab safety is one of its concerns: Abbr. |
| OSU | Rutherford B. Hayes was one of its trustees: abbr. |
| TSE | The Nikkei 225 is one of its indexes: Abbr. |
