BEND, Ore. — Kaylub Giamanco was near his children’s elementary school when he saw a teenager firing at a pickup truck. Moments later, the 36-year-old carpenter faced a decision that would place him inside a classroom under attack. Giamanco retrieved his legally owned handgun and followed the shooter into Silver Rail Elementary School on October 15. Police say he fatally shot the attacker while a teacher struggled to wrestle away the teenager’s shotgun, helping prevent an alr