All of the above, and a class of space-faring large
warships, probably
cruiser/
destroyers in
Bungie's
FPS Halo. The one and only known Halcyon-class ship is the
Pillar of Autumn, under the command of Capt. Jacob Keyes.
Not all too much is known about its
equipment, but from what we know,
* it houses a whole lot of
Marines (probably above a thousand)
* it has a four-rod
nuclear (probably
fusion)
reactor
* it has an incredibly powerful
AI called
Cortana, but an immensely and unusually small bridge (one captain, 3
helmsmen, 3
navigators, 4 other personnel)
* it has a
cryo facility
* oh, and it has a
bay loaded with 4
Pelicans (
dropships), one of them called
Foe-Hammer.