http://marsh.speedrunwiki.com/Left4Dead/dead%20air%205%20-%20runway%20finale.rar

for high quality MP4 download.

Before I did this one I thought it'd be by far the most difficult. It turns out that specials will for the most part just creep along the side of the closet instead of smokering you from 100 feet away. Plus you can manipulate the tank into going into the fire while you keep on guard for lurking specials. Not too bad actually.