http://www.oceanic-air.com/images/oa_front-letter1a.jpg
Seems like bullshit to me, though. How could a giant robotic sloth monster be "veiled" behind that smoke? You saw how it moves - at times it's no wider than the height of the characters around it. And it comes and goes so fluidly, almost with the wind. Not to mention a horrible stench usually accompanies them that doesn't seem to have affected Eko, Charlie, or Locke. At the same time, they supposedly make loud screeching noises and have large claws that can tear apart trees (which would shed light on the whole smoke cloud=uprooted trees shit) so yeah.. Whatever.
NANOBOTS, YO.
:lol: