Fes, Morocco (March 2011)
Amman, Jordan (March 2011)
Guwahati, India (February 2011)
(An OS patient on a past trip to Guwahati)
They form their teams 3-6 months before the missions so I could start hearing from them any time. If I don't get selected by December then I have to request three others. I'm sure getting on your first mission takes a while but I am willing to wait patiently!