Firefighter Thomas Mahar is bent over as he catches his breath after climbing one round of nine stories of stairs, Sept. 11, 2011, at a building in Wausau, Wis. Mahar, and other firefighters and area residents were honoring the firefighters who died in the Sept. 11 terrorist attacks by climbing 110 stories of stairs to equal the number of stories in each of the World Trade Center towers.
Miku Stone plays taps Sunday morning Sept. 11, 2011, in front of the Central Fire Station in Enid, Oklahoma to mark the 10th anniversary of the attacks on the World Trade Towers. Stone, a member of Bugles Across America, joined 1,000 other buglers who played taps at the respective times of the attacks of Sept. 11, 2001.
A man pauses while walking through the Field of Flags after the ceremony in Riverfront Park in Salem, Ore., on Sept. 11, 2011, honoring the 10th anniversary of the Sept. 11 attack on the towers of the World Trade Center, the Pentagon and the passengers uprising over Shanksville, Pa.
Credit: AP Photo/Statesman-Journal, Timothy J. Gonzalez
Shay Person of Denver touches a rusty piece of metal pulled from the World Trade Center in remembrance of her cousin Robert Noonan who worked on the 105th floor of the North Tower when they collapsed, during Colorado Remembers 9/11 event in Civic Center Park, Sept. 11, 2011, in Denver, Colo..
A U.S. Coast Guard Lieutenant, who asked that his name not be used, kneels near his father's name after a remembrance ceremony at the Garden of Reflection Sept. 11, 2011, in Yardley, Pa. The memorial honors all 58 people from Pennsylvania who lost their lives in the attacks Sept. 11, 2001.
Smoke hangs in the air as a member of Fishburne Military School's cannon crew stands next to the school's cannon. They fired the gun at 8:46 a.m., the moment the first plane struck the north tower of the World Trade Center, as part of a morning tribute service at the school in Waynesboro, Va., on, Sept. 11, 2011.
Cheryl McGuinness, widow of Sept. 11 American Airlines co-pilot Tom McGuinness, shares her story Sept. 11, 2011, at Crossroads Fellowship in Odessa, Texas, during a special 10th anniversary community remembrance service. Tom
Credit: AP Photo/Odessa American, Heather Leiphart
Zach Rodriguez, director of the Idaho State Veterans Cemetery in Boise, listens Sept. 11, 2011, to a prayer on behalf of Idaho soldiers who have sacrificed their lives since the 9/11 terrorist attack on the United States 10 years ago.
Joel Soderburg, third from left, and his daughters display a flag with the names of those lost in the 2001 terrorist attack before an NFL football game between the Arizona Cardinals and the Carolina Panthers,Sept. 11, 2011, in Glendale, Ariz.
Credit: AP Photo/LaPorte Herald Argus - Bob Wellinsk)
Members of the Georgia State Patrol honor guard begin the presentation of colors at Peachtree Christian Church on Sept. 11, 2011,before the call of worship where firsts responders are honored to mark the 10th anniversary of the Sept. 11, 2001 ,terror attacks.
Gerald Lang of Middletown spends a few quiet moments at the memorial stone for his sister Rosanne while visiting the Middletown World Trade Center Memorial Gardens on the 10th anniversary of the 9/11 terror attacks, Sept. 11, 2011 in Middletown, N.J. His nephew Brendan also perished that day.
Freeport Flag Ladies Carmen Footer, left, Elaine Greene, center, and JoAnn Miller, right, speak with Sen. Olympia Snowe, R-Maine, as they gather Sept. 11, 2011, in Freeport, Maine, to mark the 10th anniversary of 9/11.
Imam Sayed Hassan Al-Qazwini of the Islamic Center of America speaks, Sept. 11, 2011, during a press conference, reflecting on the 10th anniversary of Sept. 11 terror attacks, at the Islamic Center of America in Dearborn, Mich.
Secretary of Homeland Security Janet Napolitano, right, and Victoria Reggie Kennedy, center, listen as Massachusetts Military Heroes Fund board member Cindy McGinty speaks on the Rose Kennedy Greenway in Boston, Sept. 11, 2011. The Heroes Fund held an event on the Greenway to assemble care packages in support of US troops serving overseas in remembrance of the victims of the Sept 11, 2001, attacks. McGinty lost her husband Michael in the attacks.
Credit: (AP Photo/New Bern Sun Journal, Byron Holland.
Stephanie Nance helps her daughter, Chloe Tunnell, 4, sew the National 9/11 flag at Missouri Southern State University in Joplin, Mo.,Sept. 11, 2011. The final stitches are being placed in Joplin following a 50-state restoration tour. The flag will then go to the National 9/11 Memorial Museum.
Makenna Sprout, 4, looks over the reflecting pond at the Liberty Gardens in the Bossier City Municipal Complex in Bossier City, La., on Sept. 11, 2011, before the start of the 10th anniversary 9/11 memorial ceremony in remembrance of the victims of the September 11 attacks.
Lisa, left, and John Karounos of Las Vegas, watch as a parade commemorating the 2001 attacks on the World Trade Center and the Pentagon goes by along Fourth Street, Sept. 11, 2011, in Las Vegas. The Karounoses were living in Brooklyn, N.Y. the day of the attacks.
A monument to the attacks on the World Trade Center, featuring a twisted beam from the World Trade Center, after a memorial event and unveiling ceremony, at Fountain Park in downtown Bennington, Vermont, on Sept. 11, 2011.