Once passengers go up the escalators and head to the TSA security checkpoint, they will notice more glass art on each side of the checkpoint. This piece created by artists Amy Baur and Brian Boldon is on the left. Thread features six glass panels designed to tell the story of the Upstate’s textile history. The 30-foot-long and 8-foot-high piece of art has many layers, small details and slow-to-find gems that seem to appear the longer one looks at the piece.