The two that were allowed to travel home were American Aid workers.
It is said that they are associated with Franklin Graham's organization, Samaritan's Purse. Further, one of them, a doctor, had access to a single dose of an experimental treatment for ebola but elected to give it to the other American, a nurse. Both are said to be in stable but grave condition. Also said to be traveling in a specially designed plane to prevent disease transmission. Also said to be going into immediate isolation/quarantine upon arrival.
They will probably not survive, unfortunately.