(Portland, OR) -- As many Portland residents are preparing to fly out of town for the holiday this week, concern is mounting over where their vehicles will be parked while they're gone. Parking lots at PDX have been targets of catalytic converter thieves in recent months, a crime of opportunity that is growing across Portland and across the country. The Port of Portland says they will have extra security on hand for the increase in travelers utilizing their parking lots at the airport. Between January and October this year, the Port of Portland is reporting nearly 70 catalytic converter thefts from PDX parking lots and around the airport property.