A number of variants are developed above the fighter’s lifespan. These have integrated the T-45A, and that is a two-seat variant also employed by the US Marines, along with the T-45C, an upgraded Variation that has a glass cockpit and other augments, which currently serves like a model for T-45s https://telegra.ph/An-Unbiased-View-of-first-american-jet-fighter-09-18