Question: Which aircraft originally developed for USAF has been used for medical evacuation as well as SAC joint missions? 
Sentence (from "Strategic Airlift Capability"): The Strategic Airlift Capability (SAC) is a consortium of 12 nations, 10 of which are member states of NATO and two of which are Partnership for Peace (PfP) members, to pool resources in order to operate Boeing C-17 Globemaster III aircraft for joint strategic airlift purposes.
Relevant evidence: Yes