FBI agents arrested two men in a terror plot sting after one of them arrived in Seattle from Los Angeles intent on attacking a military recruiting station to "wake the Muslims up" to defending their religion from U.S. actions abroad, authorities said Thursday.

Abu Khalid Abdul-Latif, also known as Joseph Anthony Davis, of Seattle, and Walli Mujahidh, also known as Frederick Domingue Jr., of Los Angeles, were arrested Wednesday night after they arrived at a warehouse garage to pick up machine-guns to use in the attack, an FBI agent wrote in a criminal complaint filed in U.S. District Court.

The machine-guns had been rendered inoperable by federal agents and posed no risk to the public.

The men were scheduled to make initial court appearances Thursday on terrorism and firearms charges. It was not immediately clear if they had obtained lawyers.

They could serve life in prison if convicted.Abu Khalid Abdul-Latif, shown in a 2004 photo, was arrested Wednesday night, allegedly while picking up machines-guns to use in a terror plot. Department of Corrections/Associated Press

The Homeland Security Department said in a May 31 assessment with other organizations that it did not think it likely there would be co-ordinated terrorist attacks against military recruiting and National Guard facilities.

The agencies agreed, however, that lone offenders or groups would continue to try to launch attacks against these facilities.

"Our review of attempted attacks during the past two years suggests that lone offenders currently present the greatest threat," according to the assessment, marked "for official use only" and obtained by The Associated Press.

Recently, terror supporters have encouraged their followers to focus on simple attacks and not complex, elaborate ones like those on Sept. 11, 2001.

"Unlike hardened facilities such as active duty military bases and installations, soft targets such as recruiting stations are more likely to be deemed a feasible target due to their easy, open access to the public," the assessment said.

The agencies also predicted that successful, non-elaborate attacks overseas, such as those where crude car bombs were used, could inspire similar tactics in the U.S.

Only targeting military

Authorities learned of the Seattle plot early this month when a third person recruited to participate alerted the Seattle Police Department, the complaint said. Investigators immediately began monitoring the men, and the confidential informant continued to string them along by promising to obtain weapons.

The building, the Military Entrance Processing Station on East Marginal Way in Seattle, also houses a daycare. Recruits for all military branches are screened and processed there.

In audio and video recordings, the men discussed the plot at length, discussing how to time their attack at military recruits, such as by tossing grenades in the cafeteria, the complaint said.

"The key thing to remember here is, is we are not targeting anybody innocent — that means old people, women out of uniform, any children," Abdul-Latif is quoted as saying. "Just people who wear the green for the kaffir Army, that's who we're going after."

The agent wrote that they also fantasized about the headlines the attack would generate — "Three Muslim Males Walk Into MEPS Building, Seattle, Washington, And Gun Down Everybody" — and speculated that if they got control of the building, television news crews would arrive to cover them.

Confession

Mujahidh, 32, voluntarily spoke with investigators after the arrests and confessed, the complaint said.

"Mujahidh admitted that he was planning on carrying out an attack at the MEPS for the purpose of killing United States military personnel in order to prevent them from going to Islamic lands and killing Muslims," the complaint said.

Abdul-Latif, 33, and Mujahidh, 32, are charged by complaint with conspiracy to murder officers and employees of the United States, conspiracy to use a weapon of mass destruction, and possession of firearms in furtherance of crimes of violence. Abdul-Latif is also charged with two counts of illegal possession of firearms.

The U.S. Attorney's Office in Seattle said the defendants initially planned to attack Joint Base Lewis-McChord but later changed targets. The defendants intended to carry out their attack with both grenades and machine-guns, the government said.

'This is a sobering reminder of our need to be vigilant.'—Jenny A. Durkan, Seattle U.S. Attorney

"The complaint alleges these men intended to carry out a deadly attack against our military where they should be most safe, here at home," Seattle U.S. Attorney Jenny A. Durkan said in a statement. "This is a sobering reminder of our need to be vigilant."

Abdul-Latif has previous felony convictions for first-degree robbery and custodial assault, as well as misdemeanor convictions for obstructing a law enforcement officer, assault and theft.

When he was prosecuted on the robbery charge in Kitsap County, Wash., in 2002, Abdul-Latif was ordered to undergo a psychological evaluation, and despite some "issues" was found competent to participate in his defence, the FBI agent wrote.

Abdul-Latif was sentenced to 31 months in prison on that charge.

Mujahidh does not appear to have a criminal record, the agent wrote.