1.   But then, like a balloon encountering an unexpected thorn, there was a loud pop in her heart as all her good spirits were blown out of her.

2.   And last December, the crew shut down the left engine after hearing a loud pop, and the plane landed safely.

3.   Barclay said he heard loud pops as the car traveled around the last corner.

4.   Bob Esquire, president of the Esquire Fitness group, was working out recently in a large New York City gym when he heard a loud pop.

5.   A few seconds later, they heard a small explosion, a loud pop, like a grenade going off.

6.   A loud pop emanated from the light banks during batting practice, and players glanced warily.

7.   First, he heard a loud pop, then a car horn blowing.

8.   First, he said, he heard a loud pop, then a car horn blowing.

9.   He was watching his team work out yesterday when he was startled by a loud pop on a minor-league field.

10.   McCorkell heard a loud pop underneath the cockpit.