Public confidence in police was shaken, however, by several nights of riots and looting that rocked London and other English cities in the summer of 2011.
The Olympics security operation included warships moored in the Thames, Typhoon jet fighters and Puma helicopters on standby, and, perhaps most controversially, surface-to-air missiles on apartment buildings near the Olympic Stadium.
Jones would not give any detail of extra measures to be taken Wednesday, saying only that police "will deploy the resources we need to ensure that this is a safe and secure event."
"Protective measures for the royal family, visiting heads of state and others -- that is normal practice, and it is absolutely tried and tested tactically," she said.
"It's the way we have managed to secure so many very successful events in London against a backdrop where we often have counterprotests going on."