(Hannah Bloch/NPR)Far-Flung Postcards is a weekly series in which NPR’s international team shares moments from their lives and work around the world. While returning to the U.S. a dozen years ago from a reporting assignment in Kabul, I had a long layover at the Dubai International Airport and got to know it well — its ebb and flow from quiet to clamor and back, as passengers from all over the planet arrived and left. With hours to fill between flights, I roamed for miles around this colossal airport, the busiest international hub in the world. I spritzed myself with perfume at the duty-free shops and decided to get a pedicure at 2 a.m. The mix of familiarity and disorientation at the airport made me feel I might be anywhere, everywhere — and nowhere at all.