Time is running out to increase the amount of bomb-sniffing dogs at the nation's airports. By 2021, a new rule will require all freight to be inspected by bomb-sniffing dogs.
Harris County Sheriff's Deputy Ted Dahlin trains bomb-sniffing dogs; but his sniff more than just freight.
"They do everything that a normal bomb dog would do but the thing that specializes them is that they work with mobile loader detection -- they find explosives on people."
Deputy Dahlin told our TV partner Channel 2 his dogs go through a lot of tedious and difficult training to become bomb-sniffing dogs.
"It's tedious and long; she's 18 months old; she's a puppy; they don't know anything once we start with them so we have to teach them the odors they know. These dogs are specialized; we actually work them without a leash."
TSA trains 300-350 dogs per year at its San Antonio training center to handle airport work. But thousands of more dogs will be needed.