What is the difference between "be" and "are"? For example, which of the following is correct? "It is essential that our pilots BE given the best possible training." or "It is essential that our pilots ARE given the best possible training."?
Be is an infinitive form, while are is the form of the second person singular and all persons plural.
In the example sentence the verb is preceeded by the subject pilots,so personal form ARE is required.
Infinitive is mostly used after verbs like in sentence: Pilots must BE very skilled.