The mysterious pal of Syed Rizwan Farook who bought the rifles used in last week's deadly terror attack in Southern California has told authorities Farook aborted an earlier attack, Fox News has learned. Enrique Marquez, a former neighbor who is reportedly related to Farook by marriage, is cooperating with investigators and has not been named as a suspect in last Wednesday's attack, which left 14 dead and 21 injured in a San Bernardino social services facility. Authorities have so far said they believe Farook and his wife, Tashfeen Malik, are the only known perpetrators of the attack, although Marquez was...