Opponents never feel safe. Inside the bowels of the stadium, the players walk down a concrete tunnel that feels like it was built in 1362. Emerge from the tunnel, and Mexican fans are suddenly right there, wearing green jerseys, yelling obscenities and pounding the fence in front of them. The venom starts immediately -- booing and hissing, horn blowing, various "Meh-hee-CO! Meh-hee CO!" chants -- and never really stops. The Mexican fans had no problem drowning out "The Star-Spangled Banner" with jeers. They tossed drinks and debris at the U.S. bench for most of the second half ... which didn't matter because Azteca's opposing bench has an impenetrable plexiglass roof, but still. During a corner kick in extra time, they showered Landon Donovan with such a staggering amount of debris that he briefly staggered back toward the field in disbelief, shrugging his hands as if to say, "How could anyone act like this?"