recognition technology for all international travelers. the u.s. customs and border patrol agency is testing the high tech scanning at 13 major airports. the scanning process takes less than two seconds and has a 99% match rate. a new weapon to fight the opioid epidemic. the feds using it to sniff out drugs in packages sent through the mail. matt finn is live in chicago with the best assignment of the day. matt? dana, we regard so often about the opioid epidemic in america. believe it or not, some of the front lines in preventing the drugs from getting into american communities happens here at the international arrivals for the u.s. postal service. the u.s. border patrol agent screen all international