I saw this on the Smithsonian Channel on Mighty Planes. ORBIS. Interesting flying crew of volunteers to help restore eye vision to people in different countries. I actually met the mechanic in San Salvador last summer. He was on the report when I watched it on TV but this youtube video I saw here they seemed to have clipped alot and kept it short so he's not shown. Some organization. Very interesting to have known about this and then suddenly watch it on TV.

Mighty Planes - Orbis: The Flying Hospital - YouTube