The 2015 One Direction concert at Gillette is using a an end-stage setup with a catwalk that extends from the main stage and cuts the front part of the floor in half.
Floor section A4 is one of the closest sections to the main stage and many of its seats also sit alongside the catwalk. In most rows in A4, seat 1 is closest to the catwalk. However, there are only six seats in row 3, labeled 9-14. Among these, seat 9 is the closest aisle seat to the catwalk.