The Japanese also conducted similar reconnaissance missions in Mexico , Central America and the South American Pacific coastal areas .
Some plans were made to attack the U.S. Pacific cities of Los Angeles and San Francisco , and to strike at the Panama Canal .
The Japanese also conducted similar reconnaissance missions in Mexico , Central America and the U.S.   Pacific coastal areas .
Some plans were made to attack the U.S. Pacific cities of Los Angeles and San Francisco , and to strike at the Panama Canal .