You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Engine company No. 2 is a what?" whose answer is firehouse.
Each document should contain about 30 words, and these documents should contain useful information.

Query: nature of engine company in fire departments
Useful Output:

Doc 1: The role is about water delivery to a fire, including establishing a water supply and deploying attack lines regardless of what tactical mode you are operating
Doc 2: An engine company is comprised of engines and people who know how to operate them. A tower company has trucks with a tower (something for firefighters to stand
Doc 3: The high-performing engine company gives civilians the best chance for survival and improves safety for all firefighters operating on the
Doc 4: Most departments have to do some sort of EMS response and training, perform fire inspections, conduct hydrant maintenance, perform community
Doc 5: On many fire departments, the first-arriving company officer (CO) is also the incident commander (IC) in those first few crucial minutes