because they don't have enough on hand. in the meantime the nation's airports are trying to help calm air travelers who have concerns about the flu as well. airports across the country will now offer seasonal flu shots right in the terminal. phil lebeau is live at the airport. i guess it's great for multitaskers you have to know if you're getting on a flight in the flu season you could get something. >> sure. and even if you get a shot at an airport, that inoculation doesn't kick in until ten days after you receive the shot. just because you get one before you get on a plane doesn't mean you're going to be protected from getting the flu if you're sitting next to somebody on the plane. but airports are setting up these flu vaccination sites essentially at the request of people who both work at the airports, as well as passengers who have come through the airport. if they have a couple of hours to kill, they want to take advantage of that time, so the airports working with private