[Fredricka Whitfield, Cnn Anchor:] Hello everyone. I'm Fredricka Whitfield at the CNN Center in Atlanta, in for Wolf today. This hour, Spanish police find a powerful bomb on a high-speed rail line less than a month after those deadly train bombings in Madrid. We're live on the scene. In Iraq, bracing for retaliation for the killings of four Americans in Fallujah. And from Wisconsin, police now say the university student who says she was kidnapped is changing part of her story. First the headlines. Record growth for U.S. payrolls. The Labor Department reports 308,000 new jobs were created in March, the biggest monthly increase in four years. On average, economists only expected about 123,000 new jobs. Fresh off his trip to Europe, America's top diplomat is headed to Haiti. The U.S. State Department says Secretary Colin Powell will visit the Caribbean country on Monday. He's expected to meet with Haiti's interim government. It's the first trip to Haiti for a top U.S. official since the resignation of President Jean-Bertrand Aristide. And violence in Jerusalem. Several people were injured when Israeli police stormed the al-Aqsa Mosque compound today after prayers. Police used stun grenades and rubber pellets to control Palestinian protesters, who threw rocks at police and Jewish worshipers. The mosque is on the Temple Mount or Haram al-Sharif, a constant point of contention in the region. First up this hour, Iraq and the vow by U.S. officials to hunt down the killers in this week's gristly attack on independent security forces and to help quell anti-Western sentiment in Fallujah. Senior international correspondent Walter Rodgers joins us live from Baghdad with more on that Walter.
[Walter Rodgers, Cnn Correspondent:] Hello, Fredricka. Well, the aftershocks of the brutal murders of those four American contractors in Fallujah on Wednesday continue to reverberate through Iraq. Everyone knows the U.S. Marines have been have been assigned to retake that city. It's only a question of when. Still, a top American general here said Fallujah will be pacified as other rebellious Iraqi cities have been pacified, like Tikrit, and, again it's only question of when the Marines are assigned to go in. Still, the general said, those murderers will be hunted down. In Baghdad today there was another less violent manifestation of Iraqi anti-Americanism. After Friday prayers, tens of thousands of Shiite Muslims turned out into the streets. One Shiite cleric called this the beginning of the intifada, the start of the resistance to Americans in Iraq. People in this crowd shouted "let us fight America" and "no to the Jews, no to America and yes to jihad and yes to a holy war." Iraq itself continued to bleed today. Overnight, at least two more Iraqi policemen were killed in an insurgence ambush. Several others were wounded. In that attack at Baquba, north of Baghdad, the insurgents employed the same tactics they did to kill American contractors in Fallujah on Wednesday. They roll hand grenades under a car and then they spray the car with automatic weapons fire. About 600 Iraqi police have been killed in the last year for supporting the American occupation here and there is word of yet more American casualties being announced today. One soldier from the 1st Armored Division was killed early this morning, one of his colleagues injured when their Humvee went by an improvised explosive device, a roadside bomb, and also announced a Marine from the 1st Marine Division was killed on Thursday Fredricka.
[Whitfield:] And, Walter, back to Fallujah now with the Marines getting ready to head back into Fallujah do you know whether or not there's any kind of new tactical training that these Marines are about to undergo given that this is a particular hostile environment now?
[Rodgers:] The Marines are more than trained for this kind of environment. If it gets particularly ugly, it will be street fighting. The hesitation at this point has nothing to do with training and everything to do with intelligence. Before you launch Marines into a hostile city, like Fallujah, you want to know with good intelligence what the targets are, who are the people you are looking for? Where are you most likely to find them? And, where are the most likely pockets of resistance when you send Marine armor into the city? The hesitation all has to do with planning and intelligence and, of course, there's always the need for better intelligence Fredricka.
[Whitfield:] Walter Rodgers from Baghdad thanks very much. Well, the United States says the killing of those four Americans in Fallujah will not go unpunished. The deputy chief of U.S. military operations in Iraq, Brigadier General Mark Kimmitt indicates there could be a heavy price to pay.
[Brig. Gen. Mark Kimmitt, U.s. Military Spokesman:] Quite simply, we will respond. We are not going to do a pell mell rush into the city. It's going to be deliberate. It will be precise and it will be overwhelming.
[Whitfield:] What can and should the United States do to protect civilian and active duty military personnel? Joining me now to talk about it CNN's Military Analyst Retired Brigadier General David Grange, good to see you.
[Brig. Gen. David Grange, Cnn Military Analyst:] How are you?
[Whitfield:] Well, with the Marines getting ready to go in, is the mission to make arrests or to kill?
[Grange:] Well, it depends. It's to capture those that are responsible for the deaths or conducted some of the atrocities after those individuals were killed and, if they resist, then they would be killed themselves. It's a combination thereof and it's not only it's not only going into placed to bring to justice those that killed the four contractors. It's also to go into places throughout Iraq and also in Fallujah to arrest those that killed Iraq police officers.
[Whitfield:] Well, just within the past two weeks a number of Marines have been making their way into Fallujah replacing the Army to really do more so PR work to try to win the hearts of people there in reconstruction plans. Are those same personnel being used now to help find these insurgents, find those responsible for the killing of those Americans?
[Grange:] There's a combination of all different types of units and resources and other than just military involved in finding these people. There's a lot of use of Iraqi people to do this, to turn people in and provide intelligence and I'm sure it's being obtained right now as we speak. The PR work of the Marines is really not going to be a lot different than the Army. There's a lot of talk going on that it's 180 degrees different. It's not. They're going to emphasize one area maybe a little bit more but when the going gets tough, just like Walter said, there will be a fight. They'll go into combat. So, it's a combination of PR and combat.
[Whitfield:] Well, let's talk about the protection then of those Marines or any support groups making their way into Fallujah. How might the strategy change about protecting them or those who might particularly might be doing more intelligence work?
[Grange:] Well, any forces that go in to gather intelligence they may go in in a low visibility manner where they're not quite as obvious. They may go in under the auspices of doing something else but the point is the intelligence gathering is a constant requirement by every individual. Every individual reports intelligence, not just spy networks and not just intelligence officers, everybody, and so they'll solicit information from every street corner, every possible informant that they can to gather this intelligence. They'll maintain force protection. They'll protect the elements that go in. Talking about the contractors, that's their decision. I would imagine that they'll increase their protection of their people as well though.
[Whitfield:] Well, based on your expertise, how do you see this operation playing out over the next few days or weeks? Is this something where you, you know, get in there fast, quick and dirty or is this going to be a fairly prolonged mission?
[Grange:] Oh, it's going to be prolonged. It's not going to be what's known as shock and awe, thunder run, forces going in destroying a bunch of things and running back out. I don't think that's the case. There will be some surgical hits and captures. There will be some infrastructure, nation-building type operations, but it will be long term. The bottom line is you can't allow a certain city, an enclave, to have its way and ignore the rest of Iraq's movement to some type of democratic governance, which will happen.
[Whitfield:] You talk about...
[Grange:] They have to be part of the team.
[Whitfield:] You talk about the independent security contractors who were there representing the four who were most recently killed. Do you see that they are working hand-in-hand with the U.S. military? I mean these are people who are not who are military trained who are not in uniform however. How do they work in concert?
[Grange:] Well, it's really more informing people where each other are located. You don't they can't be in cahoots for certain things because there's some legality issues on who can be used as a soldier and who cannot. I mean there's rules for soldiers, there's rules for civilian contractors. The bottom line if there is an American slain, everybody that's a fellow citizen will want to take care of those people. It's just an inherent feeling, emotion, a sense of duty that all Americans have for others and the same for fellow coalition forces and for Iraqi police forces. Anyone that's not tied to the insurgence that's in trouble, you're going to see the military support them but the contractors have their own rules and regulations they follow and the only thing that's the only real connectivity is that the fellow citizens that would be taking care of if the need arises.
[Whitfield:] General David Grange, thanks very much for joining us, always good to see you.
[Grange:] My pleasure.
[Whitfield:] And we'll talk more about the independent security contractors in a moment. But first now to Spain where officials meet in emergency session to discuss stepping up security, this after a powerful bomb is found under the tracks of a popular rail line. Is there a connection to last month's deadly bombings? Let's go to CNN Madrid Bureau Chief Al Goodman on the scene there Al.
[Al Goodman, Cnn Madrid Bureau Chief:] Fredricka, we're standing right here on the Bullet Train Railway, right beside the Bullet Train Railway tracks. Let me just show you. The bomb was found basically in this area. Now this scene was swarming with police officers earlier this day. We're about an hour south of the capital, an hour's drive, but by the Bullet Train that would be less time because it goes so quickly. All of the Bullet Train service has been suspended. Now the interior minister, answering your question there, says there does seem to be a link with the Madrid bombings three weeks ago. He says that the bomb, which has now been deactivated by police, had the same type of explosives as was used in the Madrid commuter train bombings three weeks ago that killed 190 people and injured more than 1,800. The characteristics of this bomb today, 12 kilos or about 26 pounds of this explosive, it was connected to a detonator and that, in turn, was connected to a very long cable, so someone obviously was trying to cause a second set of damage here onto Madrid's to the train lines here in Spain. Now, as you said, the interior minister and the defense minister have held an emergency meeting, the interior minister vowing to check every kilometer of this very long train track and that's 417 kilometers or 260 miles. They're going to put helicopters on. The armed services are going to be brought in, all of this, Fredricka, in a nation that thought security already had been stepped up after the train bombings three weeks ago Fredricka.
[Whitfield:] And, Al, was it a tip that led to the bomb or was it some kind of regular track check?
[Goodman:] Officially we're being told that it is a regular track check but our CNN team here on the ground has talked to a man who says he's the one who alerted authorities to this. He says he works for a construction company that's been hired out by the National Railway Service. He was driving along this area and he saw this very long cable stretching across a dirt road here just out of camera over this way and he thought that looked very suspicious and so he alerted authorities. Now, we can say that the train service continues to be interrupted on this line. This is perhaps the most prestigious train line in all of Spain, makes the run in just two and a half hours from Madrid to that beautiful southern city of Seville and there are thousands of passengers who have been stranded. We're right at the beginning of what was supposed to be the Easter vacation week Fredricka.
[Whitfield:] All right, Al Goodman, thanks very much for that live report. When we come back there are other questions about security forces in Iraq, mainly the thousands of hired civilian security detail in the region. Who are they? Why are they there? And how do they work with armed military forces? Security and terrorism expert Kelly McCann joins me for some answers to those questions coming up. And the president is out pushing an upbeat economic agenda today in West Virginia and he may have the numbers to prove it. We'll get an update a bit later in the show.