sheriffs deputies like other agencies across the country frequently do these string operations and invited us along. we are across the street from the liquor store, decoys will gel out but we will hang back. so we don't blow their cover. elisa and the other decoys first tell strangers they're too young to get their own liquor and offer the adults money to buy them a six-pack. we ask once, if they say no. they say no. they're choosing to do this, no one is forcing them. or twisting their arm. >> reporter: what the adult beer buyers don't know is sheriffs deputies are hiding, just waiting for the decoy's signal. when elisa's hood is up, her on the right, she's confirming an adult has agreed to make the illegal purchase. >> do you ever get scared? >> i get scared. there are certain times when it gets a little risky. i believe the police officers are always there.