also under cover agents are put in tory to fill out some of the recruits to see if they have extremist views. appreciate it very much. top of the hour. a giant sink hole is getting so big and dangerous 150 houses had to be evacuated. let s take a look at this. those trees that you see there, those trees that surround the hole are 100 foot cypress trees, giant trees. here are some of the numbers. the hole is 50 feet deep. in one corner it goes down more than 400 feet. this is not something you want sneaking up in your backyard. general, nip idea what is skauzing this thing to suddenly start growing? that is the big question. this iss turned out from curiosity and concern to seeing bubbles and having tremors going back two to three months ago to what is a sink hole. this has turn into a major science problem. to figure out using good science what s causing this sink hole to occur. you know it s easy for people going out to check it out and maybe some people are joking a
role at the republican national convention? i m wolf blitzer. you re in the situation room. we begin with mitt romney s preparations for what may be the most crucial week of his presidential campaign. with several new polls out including our own showing him losing ground to president obama, romney begins a bus tour on saturday through four swing states he absolutely needs to win. but he s still traveling without a running mate. dana bash is here in the situation room taking a closer look. these are going to be huge days the next week. look, the day is young traveling without a running mate as we speak. you never know what s going to happen. regardless, mitt romney is going to have several vp-buzz generating news with him. but the campaign knows it first has to do some refining about the man on the top of the ticket, romney himself. oh beautiful, for spacious skies. reporter: if you turned on your television last month, there s a good chance you saw this brutal att
from now on, we re going to look for a brighter fuehrer. we re going to look for a united community, a prosperous community, and the negativity over the last two years will go away in no time. in afghanistan today, three american service members were killed by a gunman wearing an afghan military uniform. it happened here in the unstable helmand province. we heard a few details and about a couple of attacks on coalition forces this week alone. chris lawrence is at the pentagon. chris, what happened today in the helmand province? we re told the soldier was part of a coalition force working on stability in the helmand province. they were going to meet some of their local afghan contacts when they were shot and killed. right now the isaf, the u.s. military is looking for the gunman, the man who shot and killed these troops. the taliban claims that the troops were lured in by an afghan police commander under the ruse of having dinner and being friendly when he turned on them
rebels in syria pulling back. fierce air and ground attacks by the military in the city of aleppo forcing the anti-government fighters out of the neighborhood stronghold. for now, the rebels say it is a tactical withdrawal, and that reinforcements are already on the way. and meanwhile, the country has a new prime minister and former health minister who has been name named to replace the prime minister who you will remember defected to jordan four ys ago to join the opposition. a rescue team had just minutes of daylight to get a patient out of one of the harshest places on earth. we told you about this coming up yesterday. australian rescuers flying to antarctica today to evacuate a sick expeditioner as they are called, believed to be an american, and it all started when a distress call went out wednesday from the mcmurdo research facility. the recue team was forced to wait it out in new zealand until today for a narrow window of daylight to planned the land the plane, and
we begin this hour with a very important change in the presidential race. according to our brand new cnn/orc poll, a majority of the nation s voters now say they want to re-elect president obama. take a look at this. the president has 52%. he s seven points ahead of mitt romney who s at 45%. just a month ago the president in our poll was ahead 49% to 46%. significantly the president now according to our latest poll is above 50%. our polls also show what voters think of mitt romney s potential vice presidential picks. let s bring in our national political correspondent jim acosta. he s taking a closer look at all of these numbers. that s right. at least on the surface, should bring a smile to the obama campaign. and perhaps a warning to mitt romney and his campaign to go big in the vice presidential search with mitt romney heading out on a potential rollout of his running mate. the results on the veepstakes are even more fascinating. the two men that seem to be the safe