You might want to mention in future post that it helps us pilots if they can give us the distance in nautical miles so we know how far and how long a particular trip might take. Also, if they know the 3 letter airport ID (which non pilots may not know anything about) that would help also so we can look up those specific airports to find out pertinent information.
In my opinion, the requester should not specify an airport, as most people don't even know where the local GA airport is.
I've recently added two links to the requests that let you pull up a map showing the transport route on sectionals. One links to skyvector and the other to runwayfinder. Look at any transport request, and click on the link that says 'plan flight with skyvector' or 'plan flight with runwayfinder'. One is green and the other is purple.
It is really up to the pilot to determine the airport, and it's up to the rescuer to get the pup(s) to the airport.
The airport I flew out of had a 1900 foot runway. Many pilots don't feel comfortable flying there. The nearest commercial airport is a mere 4.3nm away, but many people think that it is closed because there is no commercial activity. This is specifically why I've set the forum to ask for zip codes. It's information the rescuer can easily find, and will plot out the course close enough for a pilot to make a determination as to what airport to use.