RIO DE JANEIRO, Brazil — Army troops and federal highway police set up checkpoints on Rio de Janeiro's major access roads Wednesday, trying to prevent thieves from fleeing with rifles stolen from a Brazilian army barracks last week. Some 1,500 troops and police officers have occupied nine shantytowns searching for the guns stolen Friday by seven gunmen wearing army-issue camouflage gear and ninja masks. The gunmen overpowered three guards, stole the weapons from a... (GunPolicy.org)