Found a backup of the thread on archive.org...
http://web.archive.org/web/20060819190218/...iew=getlastpostBasically, a unit that's dropped off by a Chinook is attacked by an enemy unit on Area Guard. Both are AI. The unit on the map HAS to be on Area Guard for it to work.
The MHQ trick can indeed be used for map reveal, since all it leaves is 3 smoking craters. If it's not surrounded you need to drop off the visceroid one cell higher though. Also note that since this is just two vehicles right next to eachother firing, the revealed spot is very small.
This post has been edited by Nyerguds: Feb 9 2010, 11:22 PM