Once war began,
the United States amped up defensive fortifications all along the West Coast. Here searchlight batteries scan the skies for enemy aircraft over Camp Callan in
La Jolla, California. (L. A. HERALD EXAMINER COLLECTION/L. A. PUBLIC LIBRARY/HEARST COMMUNICATIONS, INC. )
L. A. HERALD EXAMINER COLLECTION/L. A. PUBLIC LIBRARY/HEARST COMMUNICATIONS, INC.