Several variants are created around the fighter’s lifespan. These have provided the T-45A, that's a two-seat variant also utilized by the US Marines, as well as T-45C, an upgraded version using a glass cockpit and other augments, which currently serves to be a model for T-45s nonetheless in company nowadays. https://throatshock91.bloggersdelight.dk/2024/09/18/the-single-best-strategy-to-use-for-american-new-fighter-plane/