downriver, or aboard a jungle bus, which is what locals call the world war ii era dc-3. >> i'm flown worse. i've been brought mere by pablo mora, a teacher at medellin university and a particular enthusiast for this golden class of aviation. >> you take this flight before? >> yes, every chance i have. it's a romantic thing. >> he sees the work these hulks great airships and their pilots do, as daredevil humanitarian missions for the more remote colombians. >> they have an in-flight movie? >> no, nor first class either. >> what? >> no, no. >> the planes travel with their own mechanic to cobble together anything that might go wrong. and stuff can go wrong. the risk is we'll be able to