the world war ii era dc-3. i've flown worse. i've been brought mere by pablo mora, a teacher at medellin university and a particular enthusiast for this classic of golden-age aviation. you've taken this flight before? >> yes. every chance i have, i come here and fly one. it's a romantic thing. >> he sees the work these hulking great airships and their pilots do, as daredevil humanitarian missions for the more remote colombians. >> they have an in-flight movie? >> no, no, 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 that we'll be able to land but not take off again, so this guy is our return ticket out of the jungle.