### 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 tracking of the 14 “boomer submarines” in the naval fleet of the U.S. is generally strictly confidential.
### Errors: There is no error in the English translation.

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