Nobody standing in Newark airport that morning could have understood what that change would mean.
One Ordinary Message Before Takeoff
Flight 93 was scheduled to depart Newark at 8:00 a.m.
Lauren called Jack before the aircraft left.
Because California was three hours behind the East Coast, he was still asleep.
She left him a message letting him know that she had switched flights and would be arriving earlier than planned.
There was nothing alarming about the call.
It was simply the sort of message married couples leave for each other all the time.
A change of plans.
An updated arrival time.
I'll be home earlier.
Flight 93 left the terminal at approximately 8:01 but encountered delays before takeoff. According to the National Park Service, there were 37 passengers and seven crew members aboard.
The Boeing 757 finally took off at 8:42 a.m., bound for San Francisco.
By then, American Airlines Flight 11 had already struck the North Tower of the World Trade Center in New York.
The people aboard Flight 93 did not yet understand what was happening.
9:28 A.M.
At approximately 9:28 a.m., hijackers attacked the cockpit of Flight 93.
The aircraft suddenly dropped hundreds of feet.
Radio transmissions captured sounds of struggle from the cockpit.
The passengers and surviving crew members were forced toward the rear of the aircraft.
By this point, the United States was already under attack.
American Airlines Flight 11 had struck the World Trade Center's North Tower.
United Airlines Flight 175 had struck the South Tower.
American Airlines Flight 77 was heading toward Washington and would strike the Pentagon at 9:37 a.m.
But Flight 93 was different from the earlier hijacked aircraft in one crucial way.
Because it had departed late, the passengers had time to learn what had happened elsewhere.
They began making phone calls.
According to the National Park Service, 13 people aboard Flight 93 made a total of 37 calls between the hijacking at 9:28 and the crash at 10:03.
Through those conversations, they learned that aircraft had already been deliberately flown into buildings.
The meaning of their own hijacking became terrifyingly clear.
This was not a traditional hostage situation.
They were aboard another weapon.
Lauren Called Home Again
At approximately 9:39 a.m., Lauren called Jack.
Once again, he did not answer.
The call connected for approximately 46 seconds.
The National Park Service notes that a full official transcript of Lauren's message has not been released. But FBI agents listened to the recording when they interviewed Jack the following day and documented its substance.
Lauren explained that there was a serious problem aboard Flight 93.
Yet according to the FBI notes summarized by the National Park Service, her voice remained remarkably calm.
She repeatedly told Jack that she loved him.
And she asked him to tell her family that she loved them as well.
Then she said goodbye.
The 9/11 Memorial & Museum preserves a similar account of the recording, emphasizing Lauren's calm and careful wording.
Whatever fear she was experiencing, her message centered on the people she loved.
There was no long explanation.
There wasn't time for one.
What mattered was making sure Jack knew.
I love you.
Tell my family I love them.
Those were the thoughts she chose to send home.
Calls That Changed Everything
Lauren was not the only person trying to reach someone outside the aircraft.
Around the cabin, passengers and crew members were calling husbands, wives, parents, friends and authorities.
Those conversations gave them information the hijackers could not control.
They learned about New York.
They learned about the Pentagon.
They understood that remaining passive would almost certainly not save them.
According to the National Park Service, passengers and crew discussed what to do and made a collective decision to fight back.
At least five callers described plans for a revolt.