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: "REV Group (formerly Allied Specialty Vehicles) is an American manufacturer of specialty vehicles the in Fire & Emergency, Recreational Vehicles, and Bus & Industrial sectors, it was formed in which year, by American Industrial Partners' merging of four companies, one being Collins Industries, a Hutchinson, Kansas company that specializes in manufacturing of Type A and Type B school buses, and also manufactures ambulances and other special-purpose vehicles?" whose answer is 2010.
Each document should contain about 30 words, and these documents should contain useful information.

Query: formation year of REV Group
Useful Output:

Doc 1:  REV Group's brands pioneered their specialty vehicle product categories and date back more than 50 years. REV Group trades on the NYSE under
Doc 2: REV Group, Inc. (Exact Name of Registrant as Specified in Its Charter). Delaware, 3711, 26-3013415. (State or Other Jurisdiction of. Incorporation or
Doc 3: FONTANA, CA – April 27, 2023 – REV Fire Group, comprised of REV Group, Inc  Established in 2005 and headquartered in Rialto, California
Doc 4: OCALA, Fla – April 7, 2025 – REV Fire Group, which includes REV Group, Inc. fire apparatus brands E-ONE®, KME®, Ferrara™, Spartan Fire Chassis™,
Doc 5: REV Group companies are leading designers and manufacturers of specialty vehicles and related aftermarket parts and services.