The Smoke Squadron, the Air Demonstration Squadron of the Força Aérea Brasileira (Brazilian Air Force) founded in 1952, put on a show over the Acaraú River in Sobral, Ceará November 16, 2012. The 7 T-27 Tucano airplanes performed 55 high-performance aerobatics which lasted about 40 minutes on the day following Republic Day, the day commemorating the end of …