The phrase "a swarmed" is not correct in written English.
It is incorrect because "swarmed" is a past participle and should not be used with the article "a."
Example: "The bees swarmed around the garden."
Alternatives: "a swarm" or "a group of swarming".
Federal prosecutors in Manhattan, Brooklyn and New Jersey, in addition to the F.B.I. and the S.E.C., all swarmed Lehman in the days after its collapse.
Yet an estimated 325,000 swarmed Austin over the course of the week-long festival.
A US study recently reported that up to 50 aerial drones, controlled by one operator, had "swarmed" in a simulated co-ordinated attack.
Last week in culture, the Coachella Valley Music and Arts Festival descended upon California, a Cajun crawfish festival swarmed Tennessee, and South Korea celebrated the sport of bullfighting.
In fact, the U.S. is unprepared to defend against large numbers of short range ballistic missiles launched from a distance of only a few hundred miles from the American coasts especially if those missiles were "swarmed" and included a mix of both nuclear armed and conventional warheads.
Transforming Ethiopia, a blog, notes that 15 years ago owning a satellite dish was a crime, but now the country is "swarmed" by them, and the same goes for credit cards.
The Rebirth Brass Band ended its full-throttle show at Brooklyn Bowl on Thursday night more or less swarmed, yielding the stage to an eager throng.
Almost since the financial crisis began, JPMorgan Chase and its legion of lobbyists have swarmed lawmakers and regulators in an effort to beat back efforts to bring transparency to derivatives and to separate risk-taking activities like proprietary trading from commercial lending units.
As the season warmed up, mosquitoes, blackflies, and no-see-ums swarmed, and we slathered ourselves with a homemade insect repellant made from olive oil, citronella, pine tar, and eucalyptus.
Their quarters were so far from the nursery that "visits to them seemed expeditions," Piatigorsky wrote in her 1988 memoir, "Jump in the Waves". Timid and swarmed by servants, she was in a perpetual state of confusion and fear; her mother regarded her as "a loser". At 18, she escaped her parents' world by marrying Robert Calmann-Levy, whose father was Marcel Proust's publisher.
