THEN: Enjoying Iguazú Falls from a tour boat in 2011 are students (from left) Linnea Sandin, Lizeth Gutierrez, Lizeth’s high-school friend Melissa Vasquez-Myers and Amber Strudwick, all on a vacation break 800 miles north of their Council on International Educational Exchange study-abroad program in Buenos Aires.(Courtesy Lizeth Gutierrez)