In February 2011, assassins from one of Mexico’s deadliest drug cartels ambushed two US federal agents on a covert mission. Special agent Jaime Zapata was killed. His partner Victor Avila was wounded. But Victor says his attempts to find out the truth have cost him his job – and exposed a cover-up. SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews and https://twitter.com/skynewsbreak Like us on Facebook: https://www.facebook.com/skynews For more content go to http://news.sky.com and download our apps: iPad https://itunes.apple.com/gb/app/Sky-N... iPhone https://itunes.apple.com/gb/app/sky-n... Android https://play.google.com/store/apps/de...