Various variants are manufactured over the fighter’s lifespan. These have integrated the T-45A, and that is a two-seat variant also employed by the US Marines, and also the T-45C, an upgraded Edition with a glass cockpit and other augments, which currently serves like a design for T-45s still in provider http://www.drugoffice.gov.hk/gb/unigb/kowear.com/american-fighter/