Security clearances are issued by many government agencies and can come in several different levels, offering different access to sensitive or classified material.

安全審查是由許多政府機構頒發的，可以有幾個不同的級別，提供不同的訪問敏感或機密材料。

And even if you have the highest level of clearance, that's not an invitation to plunder all files.

即使你擁有最高級別的權限，也不能邀請你去掠奪所有的文件。

You will likely see Onley materials you need to know about who get security clearances.

你很可能會看到安利材料，你需要知道誰獲得安全審查。

As a practical matter, they go to people who are intimately involved in the safety and defense of the United States and its allies.

作為一個實際的問題，他們去找那些與美國及其盟友的安全和防衛密切相關的人。

Now, this is not all military business.

現在，這不全是軍方的事情。

For example, there could be economic information or infrastructure details or negotiations with other countries, which might be considered highly sensitive and fall under this umbrella.

例如，可能有經濟資訊或基礎設施細節或與其他國家的談判，這些可能被認為是高度敏感的，屬於這個範疇。

But all of this has to do with active government service.

但這一切都與政府的積極服務有關。

So why should anyone who's left the government retain his or her security clearance?

那麼，為什麼離開政府的人都要保留他或她的安全許可？

Former employees of an agency have experience.

某機構的前員工有經驗。

They have institutional knowledge, and the people who take over for them may need that.

他們有制度上的知識，而接替他們的人可能需要這些。

Say you worked on some classified matter involving another country, and a new team comes in.

假設你曾處理過一些涉及另一個國家的機密事務，而一個新的團隊進來了。

They need to know what you did.

他們需要知道你做了什麼。

This would assist the new team to be able to talk to you about the current situation as well.

這將協助新的團隊也能和你談談目前的情況。

In addition, some private industries defense contractors, for example, do work that requires private citizens to deal with sensitive government matters.

此外，一些私營行業國防承包商等，做的工作需要公民私人處理敏感的政府事務。

So having a security clearance outside the government can also be useful.

所以在政府之外有一個安全審查也是很有用的。

So why would anyone lose or have their security clearance revoked?

那麼，為什麼有人會失去或被撤銷安全許可？

Usually that happens because they truly no longer need it or some conflict has arisen.

通常這種情況是因為他們確實不再需要了，或者出現了一些衝突。

For example, they start working for a foreign, hostile government, or they just get into trouble.

例如，他們開始為外國敵對政府工作，或者他們只是陷入困境。

They commit a crime or they're linked to some illicit or risky activity.

他們犯了罪，或者他們與一些非法或危險的活動有關。