RTX combines three aerospace and defense franchises under one roof. Collins Aerospace supplies aircraft systems from avionics to interiors, Pratt & Whitney builds jet engines including the geared turbofan powering many narrowbodies, and Raytheon produces missiles and air defense systems whose demand tracks global tensions. The mix pairs commercial aviation cycles with defense budget stability. The company was formed in 2020 when United Technologies merged with Raytheon, uniting businesses with roots stretching back a century.