Pima County Sheriff’s Department and FBI investigators returned to Nancy Guthrie's neighborhood asking some of those living around her whether they noticed any internet connection disruptions the night Guthrie disappeared. Authorities have not said why they were asking, but many suspect an attempt to show possible use of a jammer. One home was of particular interest, the closest to Guthrie's property. The couple's home has four Ring cameras, and one camera did experience glitches. Joining Nancy Grace today: Bob Krygier - Former SWAT Commander at Pima County Sheriff’s Office Brian Fitzgibbons - Director of Operations for USPA Nationwide Security, website: www.uspasecurity.com, Instagram: @uspa_nationwide_security, former Marine and Iraq war veteran James Bass - Digital Forensic Analyst and Expert Witness of Evidence Solutions Inc. in Tucson, AZ, website: https://evidencesolutions.com/, LinkedIn: www.linkedin.com/in/bassjwb Dave Mack - Investigative Reporter, 'Crime Stories' See omnystudio.com/listener for privacy information.