The acquisition of F-35A aircraft is 1 of the most crucial priorities of the Polish Ministry of National Defense, leading to a fast strengthening of the capabilities of the Polish Armed Forces. The "heart" of the F-35, the modern F135 engine, supplies RTX, as well as elements of equipment and armament. The propulsion components and chassis of the fifth-generation fighters are built in Poland. The RTX, created by Collins Aerospace, Pratt & Whitney and Raytheon, is besides present in many another modernization programs, and employs over 9,500 employees in Poland.