Kenya Mcchell Chapman faces federal charges for allegedly selling a stolen firearm to Mohamed Bailor Jalloh, who used the weapon in a lethal classroom attack at Old Dominion University.The gunman, a former Virginia National Guard member and convicted felon, killed an ROTC instructor before students fatally subdued him at the scene.Prosecutors revealed Chapman had a history of illegal straw purchases and now faces up to 35 years in prison for his role in the fatal incident.