In 1997, the X-38 Crew Return Vehicle (CRV) 80% scale prototype was flown on the wing of a B-52. Intended as an emergency “lifeboat” for
@Space_Station, drop tests began in 1998. The program was canceled in 2002.
And I bought the Muroc Models 1/72 resin kit of that, just so I could pose it besides the NB-52A/B "8-Balls" I have,with all the other air launch vehicles I also have.