in elwa 3, i saw a level of devastation that i have never seen.went into one of the tents and there was a woman lying on the ground. she had beautifully plaited hair when i looked more closely, i realized that she was dead, and the staff were too busy trying to care for the living to even remove her. it was seeing a country essentially in free-fall and knowing, knowing with certainty that no matter what we did, it was going to get a lot worse before it got better. >> narrator: tom frieden called president obama. >> ias frankly furious. what i said was that this isn't about response in the next three months, it's response in the next three days that matters. cases were increasing exponentially, they were doubling eve three weeks. each month of delay would result in a tripling of cases. >> the wld still has an opportunity to save countless lives. right now, the world has a responsibility to act, to step up, and to do more. r narrator: ten months af the outbreak had begun, the fight back was underway. the united states sent in thousands of troops and

. >> narrator: as westoint descended into chaos, doctors without borders had been constructi elwa 3, biggest ebola hospital ever built. but when it opened, it wasld immediately clear not be enough. brett adamson was the fieldfo coordinatothe clinic. yi >> people were outside, families were dying in taxi cabs outside. they were arring seeking care. the families had nowhere else to go, the center was full, and essentially, they were waiting... the center was waiting for someone to die to then make space. >> narrator: stefan liljegrencr was uited on short notice to work athe clinic. he had no ebola experience. e>> i arrive and there ar mattresses just next to each other full of people and they're "okay, so that's how a deadd, person looks like." they're telling me that "sfan, we can't just watch. we need to go in and move bodies are you ready for it?" and i start to panic, and my pulse goes very high. there are dead bodies in there, and in gruesome positions. we go to the next one, and there are dead bodies in there as well. and we go up to a man in a chair. the guy withhe spray goes up