A number of variants are manufactured about the fighter’s lifespan. These have integrated the T-45A, that's a two-seat variant also used by the US Marines, and also the T-45C, an upgraded Edition which has a glass cockpit and other augments, which currently serves for a design for T-45s nevertheless in https://www.multichain.com/qa/index.php?qa=user&qa_1=fibrething85