Jack started to read through the niitaka documents, but soon lost concentration.

Maybe Jack would even lose some tiny bit of his bad temper.

Jack lost the coin toss for control over his satellite radio.

Jack did not lose consciousness, or even feel pain.

Jack turns the car just in time to avoid killing the man, but then loses all control.

When Jack again loses the boys' vote on the leadership, he begins to cry.

Jack loses the next challenge, and (being a coward) runs back in the house.

We've got enough firepower here to get us all killed dead, and not even Jack lost his head quite that bad.

For a few seconds Jack lost total control of himself.

The two were clearly working on something, but Jack was losing his patience.