Fullmetal Alchemist: Brotherhood - episode 53 - 17 Apr, 2010

Mustang's team has Bradley's wife interviewed on a live radio broadcast. With the power of the broadcast and the help of the Ishvalans, word of a supposed coup d'état spreads. This gives the rebels support from the citizens, while Briggs Fortress launches an attack on Central Command Headquarters. Meanwhile, Mustang manages to destroy the mannequin soldiers surrounding Edward's group by burning them to ash. May lures Envy into a trap in the upper levels, causing them both to fall below into the chamber with Edward's group. Envy reveals himself as Hughes' killer, infuriating Mustang, who unleashes a torrent of flames onto Envy. Edward's group moves onward as Mustang brutally burns Envy, but Edward gets concerned that Mustang may end up being consumed by his own hatred. Envy realizes he is no match for Mustang and flees for his life. Upon seeing Hawkeye heading toward Mustang for backup, Envy gets an idea. Mustang later encounters Hawkeye, who aims a gun at his back. (Source: Wikipedia)