(Right to left:) Ian Hein, 11, joins brothers Connor, 9, and Ryan, 8 &mdash; children of Sgt. Eric Hein of the Defense Information School &mdash; in writing thank-you cards at the Newcomers&#039; Fair. The Heins, along with other youngsters, used the card to show their gratitude for free school supplies at several Child, Youth and School Services-sponsored booths at Saturday&rsquo;s fair. 