Yeah. Chris says in the video (right before starting combat with the insects) that the player can initiate a perception check for a possibility for additional info about the enemy and a the cone to appear.
*drool*
Never has an inventory made me want to use an inventory so much. You don't see that level of care and detail these days. http://www.youtube.com/watch?feature=player_embedded&v=wHN7QTcuqI4
Also small sneak peak of a new zone at night, love it. Love it and I love the photos of the town made of fallen airplanes.