Aww, did I hurt someone's poor wittwe feewings? Probably a pilot, huh? As an AMA member in good standing who actually reads his copies of Model Aviation I know that one doesn't know what one is talking about when one claims that you have to ask permission to fly within five miles of an airport. The AMA requires members to notify an airport if they wish to operate a model above 400' AGL when within 3 miles of an airport. The law requires all UAS pilots (registered or not) to notify an airport when operating within five miles. The AMA also informed me that "most" airport addresses and contact information are available at Skyvector.com but that if you can't make contact, or if you want to establish a permanent flying location, you should contact the AMA for assistance.
If you think you may not operate a drone within five miles of an airport without permission, you are badly, sadly mistaken.