Flags in Maryland are flying at half-staff in honor of 9/11.
Gov. Martin O'Malley ordered the Maryland and U.S. flags flown at half-staff in memory of the people who died on that day.
The U.S. Naval Academy will also hold events in remembrance of the Sept. 11 attacks.
Midshipmen are holding the events on Thursday with the academy's community service organization, which is called the Midshipman Action Group.
They will be holding a 9/11 run, in which relays in small groups will run the entire day while carrying the American flag from sunrise until sunset. Every half hour the flag will be handed to the next group.
The Midshipman Action Group also is placing almost 3,000 mini American flags on Stribling walk on campus to represent those lost in the attacks. The flags will be placed by more than 150 midshipmen Wednesday night and will remain out until Friday.
It's been 13 years since the attacks on the Pentagon and the World Trade Center.