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is a border city in and the county seat of Val Verde County, Texas, United States.. Del Rio is connected with Ciudad Acuña via the Lake Amistad Dam International Crossing and Del Río-Ciudad Acuña International Bridge. Del Rio is also home to Laughlin Air Force Base, the busiest pilot training base in the United States Air Force. Del Rio's population is 45,000 as of 2007.
The Spanish established a small settlement south of the Rio Grande in present day Mexico and some Spaniards settled on what became the United States side of the Rio Grande as early as the 18th century. However, true development of the U.S. side of the Rio Grande did not begin until after the American Civil War.
The San Felipe Springs, about seven miles (11 km) east of the Rio Grande on the U.S. side of the border, produces 90 millions of gallons of water a day. Developers acquired several thousand acres of land adjacent to the springs, and the San Felipe Creek formed by the springs, from the State of Texas in exchange for building a canal system to irrigate the area. The developers sold tracts of land surrounding the canals to recover their investment and show a profit. These investors formed the San Felipe Agricultural, Manufacturing, and Irrigation Company in 1868. The organization completed construction of a network of irrigation canals in 1871. Residents referred to the slowly developing town as San Felipe Del Rio because local lore said the name came from early Spanish explorers who offered a Mass at the site on St. Philip's Day, 1635.
In 1883 local residents requested a post office be established. The United States Postal Department shortened "San Felipe del Rio" to "Del Rio" to avoid confusion with San Felipe de Austin. In 1885 Val Verde County was organized and Del Rio became the county seat. The City of Del Rio was incorporated November 15, 1911.
In 1942, the Army Air Corps opened Laughlin Field nine miles (14 km) east of Del Rio as a training base for the Martin B-26, but it was deactivated in 1945. As the Cold War pressures built, Laughlin Field was rebuilt and renamed Laughlin Air Force Base (AFB). It was again used as a home for flying training. In the mid-1950s, the Strategic Air Command (SAC) noted Laughlin's remoteness that allowed for secret operations, and opened its strategic reconnaissance program there with the RB-57, a bomber modified for high altitude reconnaissance. SAC soon transitioned to the high altitude U-2 Dragonlady and based all of them in Laughlin AFB. In 1962, it was Laughlin-based U-2s that took the first photographs of land-based nuclear missile (Medium Range Ballistic Missiles, or MRBMs) sites being constructed in Cuba. This was the photo intelligence that started the Cuban Missile Crisis. The U-2s were relocated to Davis-Monthan AFB near Tucson, AZ in July 1963 and Laughlin's mission transitioned to the Undergraduate Pilot Training (UPT) mission in the T-37 and T-38 aircraft. Laughlin AFB also provides training in the T-1A Jayhawk and the T-6A Texan II. Laughlin plays a large part in the Del Rio community as the area's largest employer. The City of Del Rio also has three Border Patrol Stations. There is one by the mall, another by the border, and one going to San Antonio. The Border Patrol Stations are probably one of the town's largest employers along with the local school district.