that also became the first aerial refueling capable aircraft of the Uruguayan Air Force in 2020, from the 1990s onwards, various attempts have been made to renew the combat aircraft to no avail, with the T-33A being withdrawn from service in 1996 and the Air Squadron No. 2 (Fighters) suffering two fatal accidents on January 31, 2004 and August 12, 2016, with A-37B aircraft. The obsolescence of the aircraft with which the unit is currently equipped has left the Uruguayan Air Force out of step with the technological advances that aerial warfare was acquiring through the experiences of conflicts during the late 20th century and during the 21st century, which, however, has not prevented the squadron and the Air Force itself from successfully participating in joint exercises between various Air Forces in the region, such as CRUZEX in Brazil or SALITRE in Chile. In May 2013 eighteen refurbished Sukhoi Su-30 MkI were offered by the Russian Federation and Sukhoi in remarkably favorable conditions that included credit facilities and an agreement branch for maintenance. These conditions were also offered for the Yak-130 Mitten. By December 2013 Uruguayan personnel had test flown this plane in Russia. According to Scramble a number of A-37B Dragonfly were purchased from the Ecuadorian Air Force in January 2014. Also, the Uruguayan and Swiss governments discussed a possible agreement for the purchase of ten Swiss Air Force Northrop F-5 plus engines, spare parts and training, but no actual progress was made. The Uruguayan Air Force also used to show interest on the IA-58D Pucará Delta modernization program offered by Fábrica Argentina de Aviones, but more recently, among some of the possible aircraft that the Air Force was considering, there are the Hongdu JL-10 or the Alenia Aermacchi M-346 Master, but despite of how necessary its renewal is, however, no purchases has been achieved. Aerodromes and air bases SUDU - Tte. 2nd Mario W. Parallada, Santa Bernardina, Durazno SUMU - Air Brigade I, Carrasco International Airport "Gral. Cesáreo L. Berisso" SUBL - Cap. Juan Manuel Boiso Lanza SUGA - General Air Base Artigas SUCL - La Calera SUCR - La Carolina SULP - La Paloma Organization Today the FAU comprises about 3000 personnel organized into three brigades and various support groups. Air Brigade I was founded as Nº1 Aeronautics on 1 April 1936. It originally consisted of eight Potez XXV biplanes. Today, the brigade includes the Central Office