Marana from google from a few years ago shows 18 of them awaiting there fate
http://www.google.com/maps?f=q&source=s_q&hl=en&q=Marana+Airpark,+Red+Rock,+Pinal, +Arizona+85245&sll=37.0625,-95.677068&sspn=39.371738,92.724609&ie=UTF8&cd=1&geocode=FTET 8AEdbGNd-Q&split=0&hq=&hnear=Marana+Airpark,+Red+Rock,+Pinal,+Arizona +85245&ll=32.513005,-111.321743&spn=0.002565,0.005659&t=h&z=18