How secure are the far out economy lots at airports, specifically PIA. My dh has to go away for business for three days. He can take his work truck to the airport and leave it there for a reasonable fee that his company will cover. But his truck has many tools in it. Or I can drive him 1.5 hrs each way to and pick him up. Gas and tolls will be more. The PIA site says the lot has 24hr a day patrol by Phila. police. We have never left our car in the airport. Any tips?