Potomac Cohort On January 6, 2007, the Potomac Cohort of Virginia Tech’s EMBA program embarks on our International Residency to Chile and Brazil! This site is intended to provide information regarding our trip via a blog, pod-cast, photographs, and (hopefully) video. Simply click on the countries flag to obtain specific information regarding that country. Or click on the VT flag to get logistical information regarding our trip. Chile Brazil Logistics