NEW YORK (Reuters) - A memo by an FBI (news - web sites) agent last summer urged the bureau's headquarters to investigate Middle Eastern men enrolled in American flight schools and named Osama bin Laden (news - web sites), suggesting followers could use the schools for terror operations, the New York Times reported on Wednesday. The memorandum said bin Laden's groups might be sending students to the flight schools to place Islamic militants in the civil aviation industry around the world, the report added, citing government officials. When four hijacked airliners plowed into the World Trade Center, the Pentagon (news...