### Chinese: 美国海军舰队中14艘“雷鸣潜艇”的行踪通常是被严格保密的。
### English: The whereabouts of the 14 "<v>Thunder</v> Submarines" in the US Navy fleet are usually kept strictly secret.
### Errors: There is a minor accuracy/mistranslation error at "Thunder" within <v></v>.

### Improved English: The whereabouts of the 14 “Boomer Submarines” in the US Navy fleet are usually strictly confidential.
