Goshawk 165073/B-273 shows Marines and TW-2 markings. The original T-45A, which became operational in 1991, contained an analog cockpit design while the newer T-45C, which was first delivered in December 1997, features a new digital "glass cockpit" design. All T-45A aircraft were eventually upgraded to T-45C standard are currently in operational use. The T-45 is to remain in service until 2035.