Alexey Pajitnov As a child, he was a fan of puzzles and played with pentomino toys. In creating "Tetris," he drew inspiration from these toys. Pajitnov created "Tetris" with the help of Dmitry Pavlovsky and Vadim Gerasimov in 1984. The game, first available in the Soviet Union, appeared in the West in 1986. Pajitnov also created a sequel to "Tetris", entitled "Welltris", which has the same principle but in a three dimensional environment where the player sees the playing area from above. "Tetris" was licensed and managed by Soviet company ELORG, which had a monopoly on the import and export of computer
25th Space Range Squadron on 1 July 2004. In November 2007, the Executioners were redesignated at as the 25th Space Range Squadron and later tested new space control tactics in a secure environment. Air Force Reserve Command activated the 379th Space Range Squadron in April 2012 as an associate unit, joining the 25th in its range management function. In 2013, the 25th was transferred back to Air Combat Command and moved under the Nevada Test and Training Range of the United States Air Force Warfare Center. On 21 June 2017, the 25th celebrated its "Centennial Anniversary" and became one of the few Air Force