Left 4 Dead 2's downloadable chapter "The Passing," released earlier today, features the above note, apparently written by another down-on-his-luck Zombocalypse veteran. Located by the sharp-eyed bloggers of Destroyed Controller, It reads: "Otis, Out of film, no helicopter. Zombies are too fast. Not going to make it. - Frank West."
It's a real shame that West's had to suffer such misfortune. We doubt he'd be in such an unfavorable position if he possessed the ingenuity of his spiritual successor.
Update: We snapped some pics of our own, like the one above. Head past the break for a few more.