NEW : Kevin Brown was honorably discharged from the military . The FBI is being aided by Orlando police . Brown admitted he planned to build a bomb after he discharged , court documents say . FBI : Brown was arrested for throwing a bomb or explosives onto a plane . Brown failed to board flight at the airport Tuesday .
NEW : Kevin Brown was honorably discharged from the military . Brown admitted he planned to build a bomb after he discharged , court documents say . FBI : Brown was arrested for throwing a bomb or explosives onto a plane . Brown failed to board flight at the airport Tuesday .