Sweeney told his wife Julie in a voicemail: "I just want you to know I absolutely love you, I want you to do good, go have good times."
Fifteen of the terrorists were from Saudi Arabia, two were from the United Arab Emirates, one was from Lebanon and one was from Egypt.
"I knew it had to be good. I didn't want to let anybody down. It had to be accurate, and I couldn't dwell too much on it because if I kept thinking about what it was, I wouldn't be able to pass 'go.'"
"Though Rick has left this earth, we will ensure that the memory of his deeds will never ever be forgotten," Trump said.
A commemoration ceremony will be taking place at the 9/11 Memorial plaza at the World Trade Center site in Lower Manhattan, starting at 8:40 a.m. EST, September 11, 2019.
Two beams of light shining four miles into the sky from dusk until dawn pull migrating birds off course, researchers have found.
"This research can help provide the best care for individuals exposed to the World Trade Center disaster," an expert told Newsweek.
"I believe that Trump is doing such a good job of turning Americans against each other instead of unifying them... that anyone who does want to hurt us would have every right to sit on their laurels and wait around until he's done to get back at it."
Omar Abdel-Rahman, 78, had been convicted of conspiring with those who killed six people and injured more than 1,000 in the 1993 World Trade Center bombing.
Some say visitors display disrespectful behavior at the site of the World Trade Center attack, taking selfies, letting their kids run wild and more.
The concertgoer lived by playing dead as the attackers opened fire around him.
The nonprofit MyGoodDeed encourages people to volunteer, give to charity and do other good deeds on September 11.
A former FBI agent is determined to find out why the CIA refused to share information that may have stopped 9/11.
The Oscar-nominated actress steps across the minefield of Middle East politics in "Honourable Woman."
Tourists and New Yorkers recall where they were when the Twin Towers fell
Just how much calendar dates, like the 11th day of September, factor into jihadists' attack plans is unclear
The museum, located the former site of the World Trade Center, opened last May