This is the first celebration of the Independence Day in the United States since the Sept. 11 when terrorists hijacked four passenger planes and used them as guided missiles to attack and destroy the World Trade Center and the Pentagon.

• 自九一一恐怖分子挟持四架客机作为导向飞弹，攻击摧毁纽约世界贸易中心以及五角大厦以来，这是美国首次庆祝独立纪念日。