Many will spend this day of remembrance giving back to honor those who lost their lives in 2001.

It’s been 18 years since the September 11 attacks and ceremonies will be held around the country today to remember the nearly 3,000 people who perished that day. Victims’ friends and families will gather at the World Trade Center site in New York City. President Trump will join an observance at The Pentagon and Vice President Pence will speak in Shanksville, Penn. at the Flight 93 crash site.

Doors are officially open for The American Red Cross blood drive at Fenway Park, which began back in 2002.

Beds are set up so people can have a comfortable place to lie while they donate their blood. More than 11,000 donations have been collected since the Red Cross started doing this. Orgnanizers are hoping for 500 units today.

Every two seconds, someone in America is in need of blood, which is why donating is so significant. In Massachusetts alone, the Red Cross must collect an average of 352 donations each day just to meet hospital needs. In fact, organizers say a blood shortage in many areas of Massachusetts has just barely ended.

“9/11 is a day of service. It’s a day where you can come out and do something for somebody else in memory of the people that were lost that day. Giving blood is a great way to show that service because there is a constant need for blood,” said Kelly Isenor of the American Red Cross.

When you donate, you get an opportunity to take pictures with some of the World Series trophies, a discounted tour of Fenway Park, a chance to enter to win tickets to a Red Sox game, and above all – a way to honor the victims of 9/11.