Salvo (noun)

1. A simultaneous discharge of firearms or artillery.
2. A sudden or simultaneous attack or release of a number of things.

Origin:

The word "salvo" comes from the italian word "salva" meaning "a saving" or "a rescue" which in turn comes from the latin word "salvus" meaning "whole" or "safe". it has been in use since the 17th century.

Examples:

1. The enemy was caught off guard by the sudden salvo of the artillery.
2. The ship's crew braced for impact as the enemy fired a salvo of missiles.
3. The band launched into a salvo of their most popular songs.
4. The company released a salvo of new products at the trade show.
5. The company's response to the crisis was a salvo of public relations and advertising campaigns.