barry petersen, thank you very much.t some of the unemployed are doing to increase their odds of getting a job. dominique strauss kahn is a free man-- sexual assault charges dropped. and we'll remember two of america's greatest songwriters when the "cbs evening news" continues. [ cat meows ] [ woman ] ♪ i just want to be okay ♪ be okay, be okay ♪ i just want to be okay today - ♪ i just want to know today - [ whistles ] ♪ know today, know today - [ cat meows ] - ♪ know that maybe i will be okay ♪ [ chimes ] travelers can help you protect the things you care about... and save money with multi-policy discounts. are you getting the coverage you need... and the discounts you deserve? for an agent or quote, call 800-my-coverage... or visit travelers.com. try this. bayer aspirin? it's not a heart attack. new bayer advanced aspirin's for pain. it has microparticles and enters the bloodstream faster. works twice as fast as before. did you invent this or something? eric first, lead scientist at bayer. wow. [ male announcer ] new b

barry petersen, cbs news, tripoli, libya. the winningest basketball coach ever faces her toughest opponent. the photographer who captured some of the most enduring images in american history. and a sneak peek at the new 9/11 memorial, when account the cbs evening news" continues. >> pelley: researchers may have found a new way to detect early warning signs of alzheimer's disease. in a new study out today, they used brain imaging scans to find chemical changes associated with memory loss. doctors hope that detecting these changes before symptoms appear will help them understand what causes alzheimer's. one of the biggest names in college sports has joined the more than five million americans battling alzheimer's. the university of tennessee's pat summitt has more wins than any other basketball coach, mail or female. but now armen keteyian tells us, she is facing her most difficult challenge. >> the head coach for tennessee pat summitt... >> reporter: to trace the artistry and the adoring crowds that define women's basketball t

barry petersen was there. >> reporter: in a long day of fighting, the rebels were throwing everything they had. to find gadhafi and take his stronghold in the heart of tripoli and after hours of fighting, the doors came tumbling down. >> allahu akbar. >> reporter: this is the moment the rebels have been waiting for. they've breached the walls, there's heavy fighting back there. they're now in fwa dgadhafi's compound. resistance was slim and the rebel's fire power overpouring. >> many, many times. >> reporter: anything they could carry, hundreds of weapon, a baby carriage for twins and this lucky man found a signature hat the world has often seen on the dictator's hat. >> i'm in gadhafi's room, oh my god and this thing happened, i found this, i was like oh my goodness. >> reporter: but the big prize, the tyrant himself nowhere to be found. the end to more than a 40-year reign of terror where the enemy disappeared into the night. >> from now on we will have a new libya. >> reporter: they celebrate the sweet taste of victory. now comes the question of if the war and all the blood shed on

barry petersen has the story. >> reporter: it was friday and libyan government soldiers commanded by gadhafi's son khamis had retreated to this base in tripoli where gadhafi's last frantic moments in power may have played out. 17-year-old soldier abu salim's job was protecting gadhafi traveling in convoys. now a rebel prisoner he was yards away from khamis when the dictatorship ended. about 1:30 in the afternoon an ordinary car pulls up, nothing fancy that would attract attention, inside, moammar gadhafi, joined shortly after by his heavily pregnant daughter, aisha. "gadhafi looked calm" says abu salim. during a 15-minute meeting gadhafi hands over the control such as it is to khamis, there is an intense family farewell, a sister to her brother, a father to his son. from here, gadhafi with his daughter at his side became a deposed tyrant on the run. they left the compound in a group of suvs while the fighting was still going on and headed south. abu salim's commander told him gadhafi was headed for sabha, where he can use strong tribal ties and the vast desert for protection. it's a

barry petersen in tripoli takes us inside the dictator's network of escape tunnels. and as the man called the edison of his time steps down as apple's c.e.o., will the high tech empire he created lose its magic? captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: good evening. hurricane irene is moving in and people along the east coast are moving out. the first watches and warnings went up today for what could be the most powerful hurricane to hit the east coast in seven years. irene roared across the bahamas today, a category three with winds of 115 miles an hour. the capital, nassau, was largely spared, but major damage is reported in other parts of the island chain. at last report, irene was about 600 miles south of cape hatteras, north carolina, moving toward the north/northwest at 14 miles an hour. hurricane watches and warnings are up from north carolina to new jersey, with landfall expected in north carolina on saturday. we have a team of correspondents posted throughout the hurricane zone. first, cbs news hurricane consul

barry petersen, cbs news, tripoli, libya. >> pelley: as we continue to watch hurricane irene, we'll takeook back at another storm that devastated the northeast. they called it the long island expres [ grandma ] why do relationships matter? [ grandpa ] relationships are the basis of everything. [ grandma ] relationships are life... if you don't have that thing that fills your heart and your soul, you're missing that part of your life that just fulfills you. ♪ [ male announcer ] for us at humana, relationships matter too. the better we know you, the better we can help you choose the right medicare plan. that's why humana agents sit down with you to figure out your medicare options. and we have nurses you can call anytime, even at 3 a.m. because when you're on the right humana medicare plan and taking good care of yourself, then you can be there for the people who matter most. [ grandma ] my family is my joy, my hope... they are my heart. it's the reason we get out of bed in the morning... [ grandpa ] the reason we fall into bed at night sometimes. [ grandma ] yes. that's right. [ male anno

barry petersen is our man in libya. >> reporter: it was friday and libyan government soldiers commanded by qaddafi's son khamis had retreated to this base in tripoli where qaddafi's last frantic moments in power may have played out. 17-year-old soldier abu salim's job was protected by khamis while traveling in convoys. now a prisoner, abu salim says he was just yards away from khamis when a dictatorship ended. about 1:30 in the afternoon, an ordinary car pulls up, nothing fancy that would attract attention. inside: moammar qaddafi joined shortly after by his heavily pregnant daughter aisha. "qaddafi" said abu salim "looked calm." >> reporter: during a 15 minute meeting qaddafi hands over the army to khamis, then there's an intense family farewell. a sister to her brother, a father to his son. from here, qaddafi with his daughter at his side became a deposed tyrant on the run. they left the compound in a group of suvs while the fighting was still going on and headed south. abu salim's commander told him qaddafi was headed for sabha where he can use strong tribal ties and the vast desert

barry petersen is investigating the remnants of the regime. >> reporter: in the last days of fighting, with defeat looming, qaddafi's soldiers turned their guns on more than 50 civilian prisoners held in a building, soldiers threw in grenades, then set the building on fire. "there were a lot of dead and a lot of wounded," says this witness. "and even the wounded, they executed in the end." but atrocities are shared by both sides. rebels killed surrendered soldiers. it is part of the cruelty of this war, but libyans have lived with another kind of cruelty most of their lives: struggling in an oil-rich country where a middle-class family survives on $330 a month and roughly one- third live at or below the poverty line, while qaddafi and his family lacked for nothing. some of their fancy houses are now in rebel hands, with their jet skis and hot tubs, and lavish surroundings. this home belonged to one of the sons, a seaside retreat complete with a baby grand piano. other houses stretched down the coast. the use of alcohol is forbidden in the muslim religion. but when the rebels came acro

siblings shot at police and robbed a bank in georgia now tracked to colorado and cbs news court barry petersen has the latest for us. >> the manhunt has been going on more than a week and now police say their car may have been spotted in downtown colorado springs yesterday. their trouble began in florida when officials say 29-year-old lee, 21 yered ryan, and 26-year-old dylan led police on a high-speed chase, then opened fire. they got away after shooting out the police car's tire. then a few hours late, they robbed a bank in georgia. the dougherty are no strangers to trouble. lee is a stripper and denver post says she has been arrested five times on hit and run charges. her brother dylan has been busted for drugs. >> these individuals are considered armed, dangerous. >> reporter: their mother is pleading for them to give up. >> please prove me right and everybody wrong by doing the right thing now and turning yourselves in. >> reporter: but lee's fiance says he doesn't think they will. >> i can't see them wanting to do the rest of their life in prison. >> reporter: the dougherty gang was last