If you're that close to the field it is for vulching and nothing else. How does that promote gameplay? Leave icons and increase the ack to prevent this from happening.
I find it rather comical when I ask a tanker, "What would happen if no one destroys your tank?" The response (at least the serious ones) consist of, "I'll go to the airfield and park my tank at the end of the runway or behind the VH." Until that changes, I'm proud to be a bomb tard.