Authorities in the Colorado movie theater massacre found an AR-15 rifle drum magazine Friday capable of carrying 100 rounds, and the police chief said thousands of rounds of ammunition for various weapons had been bought online in the weeks prior to the shooting. Police took suspect James Holmes, 24, into custody Friday after they say he set off two devices and sprayed the theater with bullets from an AR-15, a 12-gauge shotgun and at least one of two .40-caliber... (GunPolicy.org)