1. 1Figure accessed from http://www.af.mil/News/Photos/tabid/129/igphoto/2000336767/Default.aspx on May 7, 2015.
2. 2Figure accessed from http://www.avinc.com/nano on May 7, 2015.
3. 3Figure accessed from http://northwestpassage2012.blogspot.com/2012/08/faa-targets-arctic-for-uav-as-uas.html on May 7, 2015.