The nation paused Monday to observe the moments when four hijacked jetliners struck the World Trade Center, Pentagon, and a field in a rural Pennsylvania field during the worst terror attacks on U.S. soil.

During the fifth anniversary of the terror attacks that killed over 3,000 people, the people of the United States took part in silent reflection and fresh mourning. The day was to be marked with quiet observances, from the three attack sites — New York, Washington, Pennsylvania — and even to other cities and small towns.

On the 16-acre New York City expanse where the World Trade Center once stood, four moments of silence began for 8:46, 9:03, 9:59 and 10:29 a.m., the times when jetliners struck each of the twin towers, and when each tower fell. Read more.

Get complete coverage of the fifth anniversary of 9/11 in FOXNews.com's special Sept. 11 Center

Click here to watch FOXNews.com's streaming real-time video of FOX News' Sept. 11, 2001, broadcast

Share YOUR thoughts, reflections and hopes by e-mailing us at speakout@foxnews.com.

Check out what FOX Fans are saying:

"On that day, my son came home from high school and watched the events unfold. Then, several months later, he enlisted for the Army. He is still there, and I am very proud of him and pray for him daily. May God bless us all and keep us safe." — Janice

"It's unfortunate that we have to have an anniversary of this sort, but it seems it's something that's necessary in our country to remind us of just how dangerous the world is. We are people who easily forget what has happened in the past. It seems that unless someone is personally impacted or hurt by an event, tragedies pass from memory or we look elsewhere for the true cause of what has happened. I was saddened to see that President Bush is blamed for the attacks. How easy it is to blame a convenient target in our own country when we are having so much difficulty dealing with the real cause elsewhere?" — Tom (Spokane, WA)

"Today, I choose to relive the horror of September 11, 2001, and completely immerse myself in the emotion of that day. My husband and I watched the 'then live' news coverage on the Internet. The emotion just bubbles up, leaving my throat tight and my eyes full of tears. So many stories have come out since that day, and in my mind I can see those people within the buildings and planes. It is heartbreaking, knowing they suffered and felt such fear. So much ugliness has stemmed from that day. But the beauty of that day overshadows ALL the ugliness, then and now. God came out that day, he touched hearts and changed lives. People put aside their safety to save others. We stood as one, and knew that we would die for our fellow man or woman if it came to that." — Christy (Texas)

"I remember exactly where I was that morning. I had just dropped off my wife at work and was headed to work myself, when the morning radio show I listened to broke in to tell the listeners that a plane had hit one of the Twin Towers. They were shocked, but seemed to just think, as I did, that it must have been a pilot error. A short while later, the DJ announced that another plane had hit the other tower, only this time, the plane aimed itself at the tower, adjusting to hit it better. This is when I remember being in shock as I was making my way down I-75. I can remember the looks on the faces of the other drivers who were also stuck in traffic. Many had glazed looks and opened mouths as they took in the information on their car radios. A few even had an obvious look of fear on their faces. Once I arrived at work, I saw the video of the first tower collapsing and then the second tower. I couldn't believe my own eyes. It felt it in the pit of my stomach, just the totality and magnitude of the loss. I still find it hard to believe and I will never be the same for having seen it. I, too, will never forget. The war on terror is far from over, but a necessary war for everyone who loves freedom." — Richard (Dallas, TX)

"Today marks America's five-year anniversary of the horror that we all survived…let's not be complacent and think they won't try it again! I thank God everyday for our freedoms in this country and mindful of the evil that does exist in our society today" — Karen (Anaheim, CA)

"It's hard to believe that five years have passed since the day the world watched in horror as the first plane hit the World Trade Center and then learned of the three other hijackings. What saddens me is that the culprit behind the worst attack against the American people on U.S. soil in history is still at large! It's horrifying to me that almost 3,000 people lost their lives, and we are apparently no safer than we were five years ago. Nothing has changed, except that we are fighting a war against a country that had nothing whatsoever to do with 9/11. My heart breaks today for the victims of the attacks, their families and friends, and I pray that they have somehow found some semblance of peace in these last five years. I pray that they know without a shred of doubt that the tragic loss all of those brave victims will always be in my heart." — Suzanne

"The memories honestly still haunt me. I will never be able to forget. I did not know any one personally, but we all lost 3,000 members of our family." — Dean (LaPorte, Co)

“On 9/11/01 at about 3:30 AM I had a dream, I was at an oceanfront resort and as I looked out I saw what I perceived to be an American male surfer, he was caught up in the moment, he has a crew cut, enjoying himself. As I looked behind him I saw this huge, dark wave, which seemed hundreds of feet high & miles wide sneaking up on him. I felt very scared for what was about to swallow him up. I'll never forget this ominous dream that seemed to foreshadow Americans being 'swallowed up' in this dark wave which is the war of terror we still live with since the day that changed the world. The World has seemed sadly different ever since.” — Stan (Philadelphia, PA)

“I was watching TV when I saw the second plane hit the towers. I remember how I felt when the towers fell. I felt like my world would never be the same, and it hasn't been. I thank God for all the heroes in this situation. The firemen, the police, the military, as well as the normal, everyday people who were willing to risk it all for the safety of others! The people of Flight 93: God rest their souls! What a blessing they must have been to all who knew them. The people in the towers that just went to work that day, some of whom never went home: God be with them as well. I thank God I am an American, and that the above-mentioned people were part of my family. I will never forget!” — Jane (Ohio)

“I will never forget hearing the first reports on my car radio, as I drove to work along I-287 in Riverdale, N.J., that a small plane had hit the WTC and, simultaneously, seeing the black smoke billowing out of the first tower to be hit. Although I was about 35 miles west of Ground Zero, I could tell instantly that this was not caused by a small plane. By the time I reached work in Roseland, N.J., the second plane had hit and everyone knew that this was neither a small plane nor an accident.” — BK (Wanaque, NJ)

“I am sitting here at work unable to take my mind off of the horrible, deadly day. It haunts me still. I think about 9/11 everyday. I was born with such a love of this country. This country that I have so loved was being attacked! I am still in a state of shock. I don't think I will ever be the same again. I mourn for all of the lives taken from us that fateful day.” — Julie (Rockford, IL)

“I hope the American public doesn't grow complacent over the events of 9/11. I hope the American public never forgets those who perished on that day. I hope the American public and our politicians (both sides) never forget those who attacked us, because they will try again. God bless America.” — Richard (Houston, TX)

“It is still heartwrenching to see the footage and reflect on the evil that fateful day. We must never forget what took place, nor the families who cannot forget even if they try. We must continue the fight.” — K.L. (Texas)

“God bless President Bush, all of our military personnel, and God bless the United States of America, the world's last best chance for freedom.” — Mike (Memphis, TN)

“I'll never forget the horrors that unfolded that day and the sights streaming endlessly over the TV. I felt the fear and loss for the victims' families. The fear for my own husband serving aboard a Navy carrier at sea. My heart breaks for all those families who feel the loss every day, not just the anniversary. I will never forget all those who lost their lives that day, or in the years to come fighting this war on terror. Thank you to those that serve.” — Jennifer (Atoka, TN)

“We have to recognize the determination and despicable nature of our enemy. We have to understand that we do have enemies that wish to destroy every stone of Western civilization. God, please continue to bless America, and don't let us fall prey to the evil stalking our world.” — Chris (Amboy, WA)

“I would first like to express my deepest condolences for the victims of 9/11 and their families. We are all here for you on this solemn day of remembrance. I would also like to express my utter disbelief and sheer anger at the select few that chose to protest President Bush today in NYC. The fact that they would willingly and deliberately violate this day should trouble all Americans. Yes, we have the right to protest and we should, but we also have a right to protect our fellow Americans and help them when they need us most.” — Greg

“I am an American and I was living and working in London at the time. I stopped at an ATM machine early that morning about 6:45 a.m. (12:45 a.m. EST). I still have this receipt today. The innocent people that were going about their everyday lives paid the ultimate price in a larger game with the key players putting little value on life. The irony is that these people are America's strength. People who work, raise their families, pay their taxes, and contribute to their communities.” — Vincent

"The only commemoration of 9/11 that really matters to me will be when Bush actually finds and takes care of Usama bin Laden.” — Cory (Derry, NH)

"The reason we have not been attacked again since 9/11 is simple and his name is George Bush." — Madeline (Centennial, CO)

"God bless America. God bless freedom. God bless those who died that day. God bless their families and friends. And may God bless each of us in these difficult times." — Fran (Rome, GA)

"I am a survivor of September 11. I was on the 70th floor of North Tower when the plane hit the building, and because of debris, we got out of the South Tower 10 minutes before it came down. I will always remember the police, fire, emergency personnel, and the everyday people who gave up their lives to save others. May we never forget that day and remember that we must always remain a free society. God bless America!" — Larry

"My thoughts, tears, and prayers are with those souls who departed and with their loved ones." — Tony

"The greatest tribute that we can give to the 9/11 victims is to win this war on terror. Remembering the victims through memorials is important, but winning is even more important because victory ensures that there will be no more victims." — Melvin (Jacksonville, NC)

"I clearly remember that day. I have never grieved so deeply in all my life — such terror, such shock, such hopelessness for the people dying. Today, I choose to look forward to a better tomorrow for America for I believe we have found hope these last five years. I am grateful to our president and all our leaders for being diligent in keeping America safe. My heart still grieves for the families of all those who died." — Jan (Ontario, Canada)

"Watching all this again continues to fuel the fire. I will never forget 9/11. It still makes me angry that this happened. I’m proud of what President Bush has done since 9/11. God bless America." — Don (Centerville, OH)

"I am angered at the way President Bush and his administration continue to politicize 9/11. They said that they would not do so on this day, but yet that's all they've done in their speeches." — Kip (Boston, MA)

"I think the intense visual depictions of the 9/11 attack should be aired frequently. Americans should recall the heroes of that day and how close the country was in their resolve." — John (Forks, WA)

"I remember how the world united after that tragic day. I remember the bipartisanship in Washington, D.C. to seek those who attacked us. Then, I remember Bush using the tragedy for his own political aims." — Kattie (New York, NY)

"All I know is that the world has changed. My world changed forever. I used to be a cynical New Yorker and now I serve my country and my city. I will never forget. For me, it happened yesterday, and will happen every yesterday to come for the rest of my life." — Allen (New York, NY)

"I think every American should show their patriotism by flying our nation’s flag on their cars, their house, and on their front lawns. We also need to work together as one nation to defeat terrorism, not only for ourselves, but the next generation of people that will inhabit this earth." — Jerry (San Diego, CA)

"We must never forget what uncontrolled hatred can do and the horrible empty feeling we all had that day. God bless America." — Maureen (Lake Mary, FL)

"I think it is also important to remember the reactions to 9/11 on the 'Arab Street.' For the most part, there was cheering and celebration. Some of this was shown on TV then and should be replayed as well. We must not forget. That is why we are still in peril today." — Dianne (Gold Beach, OR)