A federal appeals court on Tuesday upheld Maryland’s ban on assault rifles, ruling gun owners are not protected under the U.S. Constitution to possess “weapons of war,” court documents showed. The U.S. Court of Appeals for the Fourth Circuit decided 10-4 that the Firearm Safety Act of 2013, a law in response to the massacre in Newtown, Connecticut, by a gunman with an assault rifle, does not violate the right to bear arms within the Second Amendment.