In recent days, senior counterintelligence officials have told the White House and Congress in classified briefings that Osama bin Laden's terror network, Al Qaeda, presented a continuing threat fully capable of renewed attacks in the United States or overseas.
"Stopping everything is very difficult, containing the threat fully is very difficult, but I'm sure we will prevail, as we have prevailed against other forms of terrorism in the past," Wainwright told Sky News.
Mr Bush advanced a strategy of pre-emption - act before threats fully materialise.
Any state sponsoring terrorists or supplying them with weapons of mass destruction (WMD) would be dealt with, even before the threat was fully developed.
A1 Iraqi Threat Not Fully Assessed Senior intelligence officials acknowledged that the government had not compiled an updated assessment of Iraq's nuclear, chemical and biological weapons capacities.
In a speech on Thursday, the homeland security secretary, Janet Napolitano, said the United States government would now identify threats as either "imminent" or "elevated," explain the threat as fully as possible and suggest specific responses.
"Building public support for any pre-emptive or preventative war is inherently challenging, since by definition, action is being taken before the threat has fully manifested itself," it said.
This training leads police "to shoot before a threat is fully realized, to not wait until the last minute, because the last minute will be too late".
"These ongoing attacks are proof that decisive action is required to confront this threat, including fully supporting our coalition allies and keeping our CF-18s in the fight in Iraq and Syria," Ambrose said in a statement.
Payan said that such technology, including heavy weaponry and military-style vehicles, "seems to distract [the agency] from their true mission, which is to ensure that the borders on the ground — the true threat — are fully protected and managed effectively".
Thus, The Atlantic reports, they are "trained to shoot before a threat is fully realized, to not wait until the last minute because the last minute may be too late".
