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: "Who operates the testing facility at Arnold Air Force Base in Tennessee?" whose answer is Aerospace Testing Alliance.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who operates the testing facility at Arnold Air Force Base in Tennessee
Useful Output:

Doc 1: The U.S. Air Force operates a major aerospace systems testing facility at Arnold Engineering Development Center (AEDC) in Coffee County, Tennessee.
Doc 2:  test facilities and one of the most unusual U.S. Air Force installations.  Sverdrup Technology, Inc., operates all test facilities, and ACS
Doc 3: The Complex reports to the Air Force Test Center, headquartered at Edwards AFB, California. The AEDC is an Air Force Materiel Command facility
Doc 4: The Complex reports to the Air Force Test Center, headquartered at Edwards AFB, California. The AEDC is an Air Force Materiel Command facility
Doc 5: From mowing grass to operating test utility systems, the Arnold Engineering Development Complex Civil Engineering Branch, or TSDC, ensures the