Shipping containers are shown stacked at the Port of Los Angeles in San Pedro, California August 31, 2010. The Port of Los Angeles, the nation's busiest container port and a major entry gate for apparel, footwear and toys, saw imports peak in June, July and August -- months earlier than the traditional holiday peak in October. Picture taken August 31, 2010. To match Analysis USA-RETAIL/SHIPPING REUTERS/Fred Prouser (UNITED STATES - Tags: BUSINESS)