. >> lance corporal greg buckley jr. was killed just days before he was supposed to come home. the 21-year-old and two fellow marines were shot to death while working out in a gym. the military calls them green on blue, or insider attacks. mr. buckley has his own word. >> it was an execution. >> since the start of the year, at least 51 american and allied troops have been killed in insider attacks, at first written off mostly because of personal grudges, in recent weeks, the military has come to realize a dangerous pattern and has hit the pause button on many afghan-u.s. operations. who are you angry at? >> the government, they dropped the ball. >> that's because greg buckley says they should have done more to protect his son from afghan training partners who were becoming increasinge e. >> dear, mom, dad. >> his mother still clings to the words of one of greg's last letters homes. >> you know i love you more than any person. >> a letter which eerily sounds like a good bbygoodbye. >> you'll always be my mother and the queen of everything. i don't know how to go on with my life

marine greg buckley, he was one of them. he was killed by those he trained in afghanistan in an attack earlier this month. also, david reports buckley actually told his family it would happen. >> reporter: this was the game greg buckley jr. was supposed to see. back home on leave from afghanistan where he helped train afghan forces. the 21-year-old marine had only two days left before heading home to see his brother play varsity high school football for the first time, but before getting word that he was to go home early, he phoned his dad. >> he told me that i have to stay here until november. he said i'm not going to come home, and i said i don't understand. he said i'm going to -- you have to be able to tell my mom and jesse and shane, you know, that i'm going to be killed over here. i said out in the field? you know, whatever? >> he said, no, in our base. >> reporter: then it happened. greg was gunned down august 10th by the very forces he was training. like he said, it happened inside the base. and by his phone calls an

the marine's father, greg buckley sr., is good enough to join me live from new york. enough, my condolences to you. i thank you for joining me. and if i may just begin with, tell me about your son, and why did he join the marines to begin with? >> well, it all starts from 9/11. i was down there for two days helping out the fire department. and after that he wanted to turn around and become a nassau cop. so right thing to do was go into the marine corps and serve his country, and that's where it all started from. and he wanted to do it when he was 17, i was against it, so was his mom. but, you know, at the end after the day, this is what he wanted, he was very persistent about it, that he wanted to serve the country and at the end of the day, we signed the papers and he left two months after he graduated high school. >> so he left, he ends up deployed in helmand province, and his task is to train these local afghans to become security guards. my question is, and you're talking to him on the phone, i'm sure as much as you can, what was your first indication from your so

. >> reporter: this was the game greg buckley jr. was supposed to see. afghanistan, where he helped train afghan forces. the 21-year-old marine had only two days left before heading home to see his brother play varsity football for the first time. before getting word, he phoned his dad. >> he told me, if i have to stay here until november, he says i'm not going to come home. and i said i don't understand. he says i'm going -- you have to be to tell mom and justin and shane, you know, that i'm going to be killed over here. and i said out in the field or whatever? he said no, in our base. >> reporter: then it happened. greg was gunned down august 10th by the very forces he was training. like he said, it happened inside the base and by his phone calls and letters, he knew it was coming, and on one particular night on guard duty, he a run-in with a trainee. >> the guy turned around and said to greg, we don't want you here, we don't need you here. and he said, why would you say that? i'm here giving my life to you guys to help you. to make better. do better f

. >> this was the game that greg buckley jr. was helping to train afghan forces. the marine had only two days left before had to see his brother played varsity football for the first time. before getting word that he was to go home early, he phoned his debt. >> he told me that he would have to stay until november nov said he was not coming home. he said, you have to tell mom and my brothers that i will be killed. >> then, it happened. he was gunned down when the very forces he was training, like he said, it happened inside the base. by his full calls and letters coming in a that was coming. on guard duty, he had a run in with a trainee. >> his dad said he spent the rest of the night with the training. building local security is considered the linchpin for withdrawal, but attacks by chinese have become disturbingly more treatments. i collapsed and of course his mother collapsed. >> his brothers refused to cry, at least during the day. >> i thought my son had dropped water on the floor, bawling. my other son had a pillow over his

afghanistan, the pentagon, authorities in afghanistan, none of them could tell us where the man who shot greg buckley jr. is. promise you we'll stay on it. you can watch my full interview. go to cnn.com/brooke. now "the situation room" with wolf blitzer begins now. >> brooke, thanks very much. happening now, another day, another new strategy for the romney campaign. voters are about to see a lot more of the republican nominee. also, recent polls show momentum shifting to president obama. we're about to find out which way the state of nevada is moving. and new developments in the hunt for the suspects in the attack that killed the united states ambassador to libya and three other americans. i'm wolf blitzer. you're in "the situation room." >>> with only 47 days to go until the election, the romney campaign's about to roll out another new strategy. voters will be seeing a lot more of mitt romney. in fact, we're only minutes away from his speech at a rally in florida. our national political correspondent jim acosta is joining us now live from sarasota to set the scene. jim, what's going on? >> reporter:

> with the community behind them, the buckley family is coping as best they can and justin, oceanside's star running back wearing cam mow with his team to honor greg to salute his fallen brother each time he scores. >> justin, that's it, kid. >> if justin was here, what would you tell him. >> that i love him and i miss him. that's about it. >> thank you. >> reporter: cnn, oceanside, long island, new york. >> we wish that family the very best. we want to show you something that happened moments ago, the

buckley family is coping as best they can. and justin wearing camouflage to salute his brother. >>> greg was supposed to be home for this game.tell him right now. >> i would tell him i love him and i miss him. that's about it. >> thank you. >> david ariosto, cnn, oceanside's long island, new york. >> and we'll have more on the latest green-on-blue attacks in afghanistan coming up in the 7:00 hour. we'll be back. >>> welcome back to "early start weekend." this morning's passport. kate middleton sun bathing topless. they're the photos everybody is talking about and naturally the royal couple is pretty upset. st. james palace released a statement saying their royal highnesses had every expectation of privacy in the remote house. it is unthinkable that anyone should take such photographs, let alone publish them. the couple was there for much needed relaxation heading up for this week's tour of asia. now the italian magazine says it plans to public more of these topless photos tomorrow. it comes more than three weeks after naked pictures of william's young brother prince harry partying naked in a las vegas hotel room. here to talk

with the community behind them, the buckley family is now coping as best they can, and justin, ocean side star running back wearing cameo with his team to honor greg what would you tell him right now if he was home? >> i would tell him i love him and miss him. yeah, that's what i would do. >> cnn, ocean side, long island,