Hall, Mimi, "Drones could defend airports", USA Today March 23, 2007 Barrie, Allison, "Eye in the Sky: New Flying Laser Will Stop Heat-Seeking Missiles" Fox News May 22, 2008 "Character biography".
Truy cập ngày 16 tháng 7 năm 2012.  ^ Hall, Mimi, "Drones could defend airports", USA Today March 23, 2007 ^ Barrie, Allison, "Eye in the Sky: New Flying Laser Will Stop Heat-Seeking Missiles" Fox News May 22, 2008