The driver remained seated behind the wheel.
Her hands stayed at ten and two.
She did not like the situation.
But she had heard something too.
Not clearly.
A vibration.
Maybe.
She had felt a faint tremor through the floor as she turned into the pickup lane.
She had blamed the rough pavement.
Now she looked into her left mirror.
The biker was still pointing toward the same wheel.
The supervisor finally turned.
He crouched beside the bus.
The crowd quieted a little.
He reached toward the outer rear wheel.
Then stopped.
One lug nut was missing.
The stud was visible.
He frowned.
He touched another nut.
It turned under his fingers.
His face changed.
He reached for the next one.
Loose.
Then another.
Loose.
Before he could speak, something metallic dropped.
Ping.
A lug nut struck the pavement and rolled toward the gutter.
Nobody said anything.
The wheel shifted.
Not dramatically.
Less than an inch.
But enough.
A heavy dull clunk came from the wheel assembly.
The supervisor stepped backward so fast he nearly fell.
The bus driver saw his face in the mirror.
She immediately shut off the engine.
The biker walked closer but did not touch the bus.
“That’s what I heard.”
The supervisor stared at the wheel.
Three lug nuts were loose.
One was missing.
Another had just fallen.
The wheel had already begun working against the remaining clamping force.
There were fresh reddish marks around several holes where movement had started damaging the seating surfaces.
The supervisor looked up slowly.
Then he noticed the inspection sticker.
It was bright.
Clean.
New.
Affixed near the wheel-well maintenance marker.
He leaned closer.
The date was that morning.
He read it once.
Then again.
His face lost color.
The biker noticed.
“What?”
The supervisor did not answer.
The security officer crouched beside him.
“What is it?”
The supervisor pointed.
“Cleared today.”
The biker’s expression changed.
The supervisor swallowed.
“This bus was signed off at 2:21.”
The biker looked at his watch.
Less than one hour earlier.
Behind them, the bus driver opened the door.
She did not allow any children out yet.
“Is the wheel secure?”
The supervisor stood.
“No.”
Her eyes narrowed.
“How not secure?”
He hesitated.
The biker answered because the supervisor did not.
“It was beginning to come loose.”
The driver stared at him.
Then at the children behind her.
Then back at the supervisor.
“You told me this bus was ready.”
The supervisor raised both hands.
“We need to get the students transferred.”
That was the correct answer.