Tirpak, John A., ed. (February 2010). "Washington Watch: Stealth Messenger". AIR FORCE MAGAZINE, Journal of the Air Force Association. 93 (2). Air Force Association: 6. ISSN0730-6784. Archived from the original on 22 February 2010. Retrieved 2 February 2010.
Tirpak, John A., ed. (February 2010). "Washington Watch: Stealth Messenger". AIR FORCE MAGAZINE, Journal of the Air Force Association. 93 (2). Air Force Association: 6. ISSN0730-6784. Archived from the original on 22 February 2010. Retrieved 2 February 2010.
worldcat.org
Tirpak, John A., ed. (February 2010). "Washington Watch: Stealth Messenger". AIR FORCE MAGAZINE, Journal of the Air Force Association. 93 (2). Air Force Association: 6. ISSN0730-6784. Archived from the original on 22 February 2010. Retrieved 2 February 2010.