Three Armenian doctors, who departed for South Sudan to temporarily substitute Aurora Prize winner Tom Catena, an American physician, who has been practicing in Gidel in the Nuba Mountains since 2008, returned to Yerevan on June 10, 2017. Dr. Tom, as the locals call him, spends all his time at the Mother of Mercy Catholic Hospital to care for the more than 750,000 citizens of Nuba amidst ongoing civil war. Upon their return, Hayk Hovhannisyan, Armine Barkhudaryan and Gevorg Voskanyan shared impressions about their mission.