Many variants are already produced above the fighter’s lifespan. These have integrated the T-45A, that's a two-seat variant also utilized by the US Marines, as well as T-45C, an upgraded Edition having a glass cockpit and other augments, which currently serves like a model for T-45s however in support today. https://aprelium.com/forum/profile.php?mode=viewprofile&u=saltmuscle66