12. • http://list25.com/25-most-top-secret-military-operations-in-history/
• http://cdn2.list25.com/wp-content/uploads/2013/03/Slide11310.jpg
• http://i.dailymail.co.uk/i/pix/2014/02/01/article-2549756-
1B1C7F8600000578-532_468x308.jpg
• http://www2.gwu.edu/~nsarchiv/NSAEBB/NSAEBB278/image02_600
.png
• http://www2.gwu.edu/~nsarchiv/NSAEBB/NSAEBB278/image01_600
.jpg
• http://upload.wikimedia.org/wikipedia/commons/6/66/A_Catalina_flie
s_by_the_North_Front_of_the_Rock_as_it_leaves_Gibraltar_on_a_p
atrol_(March_1942).jpg