The full deployment of F-35 Block 5 is expected to occur in stages, with some features expected to be integrated into Block 4 by 2027, while more advanced technologies, like laser weapons, will likely be introduced in the 2030s., The Department of Defense (DOD) is currently fielding and modernizing the F-35 Joint Strike Fighter, a family of fifth-generation strike fighter aircraft that integrates low-observable (stealth) technology with advanced sensors and computer networking capabilities., The F-35 is the most expensive weapon system in history, with a total lifetime cost projected to exceed $2 trillion. This staggering figure includes development, procurement of 2,470 aircraft, and decades of operation and maintenance., Block 4 modernization – over 75 major upgrades for all three F-35 variants – is the most significant evolution of F-35 capabilities to date, including increased missile capacity, advanced electronic warfare capabilities and improved target recognition., The F-35 program is a joint, multi-national program among the United States, seven cooperative international Partners,, seven cooperative international partners, seven cooperative international partners, and nine current foreign military s ales countries., Since its development in 2019, the priority for the NGAD program is to develop a “portfolio of technologies enabling air superiority.” This means that while the program is aimed at replacing the F-22 fighter jets, the Air Force is also looking at technologies developed within the NGAD program that would establish continued air dominance..