The phrase "opening salvo" refers to the first action or statement in a series that often sets the tone or initiates a conflict or competition. Full definition
FERC is unlikely to take up the proposal as written, analysts and former regulators agreed, but regulators currently at the agency have indicated they plan to address plant compensation and reliability questions — making the NOPR the Trump administration's opening salvo in what is likely to be a long and contentious regulatory battle over the future of the fuel mix and competitive electricity markets. (utilitydive.com)
In a frankly remarkable opening salvo of images both sexually frank and gruesomely detailed, the stereotypical «pool boy» flirts with a willing Gilda, only to be disposed of mid-coitus by Otavio, fileted and served as the evening meal. (screen-space.squarespace.com)
This, along with Tales from the Borderlands, are an exquisite opening salvo from Telltale, ushering in the third age of interactive movies. (metacritic.com)