It sounds like they are informing a person or a group that they are closing in on something or they are telling people to answer those five questions.

Here is an interesting article that discusses the Five Ws: https://en.wikipedia.org/wiki/Five_Ws

"The Five Ws, Five Ws and One H, 5W1H, or Six Ws are questions whose answers are considered basic information gathering or problem solving. They are often mentioned in journalism (cf. news style), research, and police investigations. They constitute a formula for getting the complete story on a subject. According to the principle of the Five Ws, a report can only be considered complete if it answers these questions starting with an interrogative word:

What happened?
Who was involved?
Where did it take place?
When did it take place?
Why did that happen?

Some authors add a sixth question, “how”, to the list, though "how" can also be covered by "what", "when", or "where"

How did it happen?"

The full article talks more about it being used in journalism.