By: Jason Howerton, The Blaze

On Sept. 11, 2001, nearly 3,000 people were killed on America’s worst day of terrorism as 19 al-Qaida terrorists hijacked four passenger jetliners. Two planes smashed into New York’s World Trade Center, causing the twin towers to fall; one plowed into the Pentagon; and the fourth crashed into a field in western Pennsylvania.

On Tuesday night, two glorious beams of light will pierce the New York skyline where the Twin Towers used to be in remembrance of everyone who lost their lives on that fateful morning. It’s an occurrence that has become a staple on the anniversary.

Victims’ families and others will gather and grieve Tuesday at ground zero, the Pentagon and near Shanksville, Pa., for the first time after the emotional turning point of last year’s 10th anniversary.

The Tribute in Light shines above the World Trade Center and the Statue of Liberty, left, Monday, Sept. 10, 2012, as seen from Bayonne, N.J. Tuesday will mark the eleventh anniversary of the terrorist attacks of Sept. 11, 2001. The tallest tower is 1 World Trade Center, now up to 105 floors. In the center is 4 World Trade Center. (AP Photo/Mark Lennihan)

The Tribute in Light shines above the World Trade Center and the Statue of Liberty, left, Monday, Sept. 10, 2012, as seen from Bayonne, N.J. Tuesday will mark the eleventh anniversary of the terrorist attacks of Sept. 11, 2001. The tallest tower is 1 World Trade Center, now up to 105 floors. In the center is 4 World Trade Center. (AP Photo/Mark Lennihan)