By Bret Strelow | App State Athletics BOONE, N.C. — An unforgettable day at App State began with ESPN College GameDay’s first visit to Boone. It then delivered a second unbelievable, historic ending at The Rock. Call it Miracle on the Mountain: Part 2. Chase Brice’s 53-yard, Hail Mary touchdown pass to Christan Horn — with help from 6-foot-4 teammate Dalton Stroman’s crowded tip at the 5-yard line and Kaedin Robinson’s sealing block after Horn made a circling catch of the tip at the 8 — gave App State a thrilling 32-28 win against Troy in their Sun Belt Conference opener. Thrilling. Historic. …