Originally posted by diamondgeezer
By Cheyenne do you mean Sulaco? Or was that name of the actual dropship?
Yeah, the dropship, sorry about that.
To put things clear:
the sulacco is a Conestoga Class starship ( the thirteenth actually, yeah fluff

)
the dropship is an AD4L Dropship, often called Cheyenne.
for fun:
AD4L weaponary:
1 x 25 mm gatling gun with 900 rounds
32 x 150 mm unguided rockets
12 x 70 mm unguided rockets
8 x 120 mm guided rockets
7 x AGM-220 air-to-ground missiles
3 x TSAM threat suppression missiles
3 x AIM-90 short range air-to-air missiles
I'd call that a gunship, not a dropship, but hey, that's just me

As far as I know, with the APC, it's the Alien vehicle with the most detailled background. Even have the engine specs and stuff.