On a sunny day last week, a group of American teen-agers marched up and raised a U.S. flag over their high school at Balboa in the Panama Canal Zone. It seemed an everyday thing to do. But in the ...

But first, some background: In 1904, the United States took over construction of the Panama Canal ... is the main entry way into Balboa Park. It is located on El Prado, the main boulevard through ...