FBI Nancy Guthrie billboard campaign aims for 'crucial piece of information'

The FBI launched a billboard campaign related to the search for missing Nancy Guthrie in hopes of finding a "crucial piece of information" to bring her home. 

An FBI Houston spokesperson told Fox News that the interstate campaign, which features billboards in Phoenix, Ariz., Albuquerque, N.M., Los Angeles and the cities of El Paso, Dallas, San Antonio and Houston in Texas, is centered around raising "as much public awareness as possible for this case." 

"Our billboard footprint includes multiple states surrounding Arizona...