NEW YORK (CBSNewYork) – To cap off Fleet Week, hundreds of Marines gathered Monday for a wreath-laying ceremony at the World Trade Center site, WCBS 880’s Alex Silverman reported.

WCBS 880’s Alex Silverman On The Story

“It’s our responsiblity to remember,” said Col. Ken DeTreux through a bullhorn while standing atop a stone platform at the 9/11 Memorial plaza. “And we will always stand guard.”

EXTRA: Guide to Fleet Week 2012

The Marines were dripping with sweat from a run through Lower Manhattan. They were three and four deep around him.

“70 percent of the Marine Corps. are under 25-years-old,” he told Silverman. “So, when you do the math, you know, 11 years ago, a lot of these guys were in grade school.”

DeTreux said they were somehow moved to commit themselves to defending their country.

“To be able to see all the names of all the victims and all the people killed during this, it’s very moving and it’s very touching,” said a Navy Hospital Corpsman just back from Afghanistan. “And it’s my honor to serve them the way they served our country.”

“Semper Fi always Marines,” DeTreux said through his bullhorn.

How have you paid tribute to those killed on 9/11? Share your story in the comments section below.