1.   The building exploded into rubble with a loud boom.

2.   There was a loud boom.

3.   A loud boom.

4.   A salute is the loud boom you hear, usually during a finale.

5.   A very loud boom.

6.   Employees said they heard a loud boom, then saw agents with shields and submachine guns swarm out from an airplane hangar, and arrest three men.

7.   James said he was working in the laundry room when he heard a series of loud booms and ran outside.

8.   Loud booms and the sound of sirens filled the air.

9.   Loud booms routinely stop conversations in cafes and parks as people wait to see if they are bombs.

10.   Q. My gas burner periodically makes a loud boom.