[:D]C-5 and C-17

The original 1/144 scale Otaki C-5 Galaxy was also packaged in boxes by Entex, Revell, and Testor, but has been out of production since the late 1980s and hard to find.

The I.D. Models vac kit of the C-5 is currently available from Delta Aviation Publishing:
www.geocities.com/delavpub/Home.html
Keep in mind, this is an expensive and difficult kit (I know, I built one!).

other than the elusive 1/72 Vacu kit of the Galaxy, the only ones available (or once available) are the Academy 1/480 and the Otaki (1/144???).

The C-17 is being released by Panda, in two 1/72 variants, the -A and the -K.