Immediately after World War II, the Army's San Antonio Air Technical Service Command established a storage facility for B-29 and C-47 aircraft at Davis-Monthan AFB. Today, this facility is the 309th Aerospace Maintenance and Regeneration Group (309 AMARG), which has grown to include more than 4,400 aircraft and 13 aerospace vehicles from the Air Force, Navy-Marine Corps, Army, Coast Guard, and several federal agencies including NASA. With an original purchase price of more than $35 billion, this aerospace fleet provides a unique savings account from which military units throughout the world may withdraw parts and aircraft. The government earns additional income by selling aircraft to our allies.
The chief reasons for selecting Davis-Monthan as the site for this storage center were Tucson's meager rainfall, low humidity, and alkaline soil. These conditions make it possible to store aircraft indefinitely with a minimum of deterioration and corrosion. In addition, the soil (called caliche) is hard, making it possible to park aircraft in the desert without constructing concrete or steel parking ramps.
Red sky by morning, sailor take warning. Red sky at night, sailor's delight!
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