Daily Caller 
December 30, 2012
The 62-year-old convicted felon who gunned down two firefighters and wounded three first responders on Christmas Eve in Webster, New York used weapons his neighbor illegally purchased for him, according to state and federal authorities.
The neighbor, 24-year-old Dawn Nguyen, was arrested on Friday after police traced the serial numbers on two weapons used by William Spengler, the shooter: a Bushmaster AR-15 semiautomatic rifle and a 12-gauge shotgun, both purchased in 2010.
While this so-called “straw purchasing” is illegal, the U.S. Department of Justice sanctioned the practice between 2006 and 2011.
Full story here.