Early in World War II's noisy propaganda campaign, reporters at CBS's shortwave listening post in Manhattan became fairly familiar with an impersonal, unaccented voice reading .
Gadahn, 25, is an American through and through, born and bred in California, a speaker of unaccented English, intimate with the country's habits and thus able to move about .
Speaking with nearly unaccented English, the graduate of the University of Southern California seemed proud to support the movement that is "already invested with the blood of my .