25 AUGUST 2008 -- PHOENIX, AZ:  US Sen John McCain (R-AZ), the presumptive Republican nominee for President, visits Central High School in downtown Phoenix, AZ, Monday, Aug 25. McCain  campaigned with Puerto Rican hip hop, reggaeton star Daddy Yankee (Ramon Ayala). Central High School is one of the most diverse high schools in Phoenix. More than 50 languages are spoken by students at the school.    PHOTO BY JACK KURTZ