Stony Brook Film Festival, now in its 26th year, kicks off on Thursday, July 22 with the world premiere of The 5th Man, a documentary on Paul Limmer, a former track coach at Bellmore’s Mepham High School. During his 50-year career there, Limmer racked up hundreds of wins, though director Trey Nelson focuses on the story of all the other kids – the ones who never felt “seen” – until Paul Limmer came into their lives.