It's chaos in Saigon April 22-24, 1975, before the last Pan Am/civil flight out. Vietcong is closing in on Saigon and many want to get on it.It's chaos in Saigon April 22-24, 1975, before the last Pan Am/civil flight out. Vietcong is closing in on Saigon and many want to get on it.It's chaos in Saigon April 22-24, 1975, before the last Pan Am/civil flight out. Vietcong is closing in on Saigon and many want to get on it.