| Reactor-overseeing org. | 23 |
| Reactor overseer: Abbr. | 23 |
| Reactor monitor: abbr. | 22 |
| Protective agcy. since 1974 | 27 |
| Org. concerned with radiation | 29 |
| Org. concerned with meltdowns | 29 |
| Seagoing mil. training group | 28 |
| Future ensign's org. | 24 |
| Midshipmen's prep program | 29 |
| Campus midshipmen's org. | 28 |
| Govt. intelligence org. | 23 |
| Electronic surveillance gp. | 27 |
| U.S. intelligence org. | 22 |
| U.S. code and cipher grp. | 25 |
| Code-breaking govt. group | 25 |
| U.S. eavesdropping org. | 23 |
| National code-cracking org. | 27 |
| Intelligence gathering dept. | 28 |
| Hush-hush govt. agency | 22 |
| Govt. cryptanalysis org. | 24 |
| Govt. code-breaking group | 25 |
| Cryptologist's org. | 23 |
| Cryptologic govt. org. | 22 |
| Controversial wiretapping gp. | 29 |
| Codebreaking govt. org. | 23 |
| Code-breaking D.C. gp. | 22 |
| Certain intelligence org. | 25 |
| Wiretapping scandal gp. | 23 |
| Top-secret intelligence org. | 28 |
| Super-secret intelligence gp. | 29 |
| Super-secret defense gp. | 24 |
| Subj. of Snowden leaks | 22 |
| Source of intelligence: Abbr. | 29 |
| Secret U.S. govt. group | 23 |
| Secret decoder ring?: Abbr. | 28 |
| Part of the Dept. of Defense | 28 |
| Org. that monitors chatter | 26 |
| Org. started by Truman | 22 |
| Org. protecting U.S. secrets | 28 |
| Org. promoting intelligence | 27 |
| Org. for U.S. cryptologists | 27 |
| Org. for Peggy Fleming et al. | 29 |
| Org. employing cryptologists | 28 |
| Org. concerned about leaks | 26 |
| Old nuclear watchdog: Abbr. | 27 |
| Noted eavesdropper, for short | 29 |
| Intelligence-gathering org. | 27 |
| Intel interpreter, for short | 28 |
| Initials in casual hookup ads | 29 |
| Hush-hush Fort Meade org. | 25 |
| Grp. concerned with hacking | 27 |
| Gp. with many interceptions | 27 |
| Govt. surveillance group | 24 |
| Govt. intelligence gp. | 22 |
| Fort Meade-based govt. org. | 27 |
| Electronic eavesdropping org. | 29 |
| Defense Department gp. | 22 |
| Defense Department dept. | 24 |
| Cryptologists' org. | 23 |
| Cryptologist's gp. | 22 |
| Cryptanalyst's org. | 23 |
| Cryptanalyst-hiring org. | 24 |
| Codebreakers' org. | 22 |
| Codebreaker's org. | 22 |
| Code-crackers' org. | 23 |
| Code crackers' org. | 23 |
| Clandestine govt. org. | 22 |
| "Sneakers" org. | 25 |
| White House advisory gp. | 24 |
| White House advisory grp. | 25 |
| Presidential advisory grp. | 26 |
| Secret grp. since 1947 | 22 |
| Presidential advisory org. | 26 |
| Presidential advisory gp. | 25 |
| Grp. advising the president | 27 |
| White House security grp. | 25 |
| White House defense grp. | 24 |
| White House defense gp. | 23 |
| U.S. defense strategizer | 24 |
| Top-level U.S. advisory grp. | 28 |
| Iran-contra affair org. | 23 |
| Homeland protection org. | 24 |
| Gp. established under HST | 25 |
| Foreign policy advisory grp. | 28 |
| Executive Office component | 26 |
| Defense planners in Wash. | 25 |
| Tiny fraction of a min. | 23 |
| Brief moment of time (abbr.) | 28 |
| Tiny time period: Abbr. | 23 |
| Tiny time fraction: Abbr. | 25 |
| One sixty-billionth of a min. | 29 |
| One of 60 billion in a min. | 27 |
| Tiny unit of time: Abbr. | 24 |
| Tiny time fragment, for short | 29 |
| Tiny fraction of time: Abbr. | 28 |
| Tiny division of a min. | 23 |
| Tiny bit of time: Abbr. | 23 |
| Minuscule part of a min. | 24 |
| Tiny time unit, for short | 25 |
| Tiny time interval: Abbr. | 25 |