on two gene mutations that have been found in some children with acute my low leukemia also known as aml. >> as long as you stay inspired and driven to do what you do, as long as you continue to do the brilliant work -- >> the foundation has also hosted four head shaving events this year, shaving more than 280 heads and raising over $10,000. >>> now more on the david petraeus affair. the department is investigating general john allen, the top american commander in afghanistan for what they're calling potentially inappropriate emails. those emails were with jill kelley, the petraeus family friend who tipped off the fbi about emails she was receiving which was traced back to paula broadwell. broadwell is the woman accused of having an affair with petraeus. allen said he did nothing wrong but his nomination as the next allied command are of nato has been put on hold. >> the president thinks very highly of general allen and his service to his country as well as the job he's done in afghanistan. at the request of the secretary of defense, the president has put on hold the position. >> with re

. >>> shares of amle with bouncing back perform the stock is trading 1.3% higher thanks to sales of newillion in total, bulk coming from ipad mini. >> meantime, the ipad is getting serious competition in the tablet market. new stats show while it has a big lead in market share, that lead has dropped nearly 10% over the past year. let's bring in todd has hazelton. is this bad for apple or good for everybody else and also good for apple? >> you know, brian, competitors have one lever to compete against with apple and that's price. they'll use that to their full advantage. when you have a company like apple that has the highest margins in the space that we cover, there's plenty of room for competitors to offer products not as good or desirable but at a lower price so they'll get a chunk of share. >> will apple change the price or won't because it wants to keep that cache? >> one thing we to want keep an eye out on apple, will they ever compromise their position in the high-end? the ipad mini price tag was higher than expected bit it allows them to maintain margins and allows competitors to

. >> reporter: brennan was diagnosed with aml, a severe form of leukemia that's difficult to cure. >> we had doctors to tell to us quit. we had nurse practitioners, experts saying let him go home and do the hospice thing. he won't have all the awful chemicals in his body but to him there's a quality of life in fighting. >> reporter: st. jude's children's research hospital was recommended. doctors tailored treatment to brennan and performed a second bone marrow transplant but after a year his cancer came back and a third transplant followed, again, the cancer returned. >> how scared were you when it was at the worst? >> very, very scared. i didn't know if tomorrow was going to be my last day or not. every time i closed my eyes, it felt like i was going to die while asleep. >> reporter: really? >> yes, that scary. >> reporter: young brennan and his family had a choice to make. >> the doctor came to you and asked if you you wanted to get the fourth bone marrow transplant. >> and i said, yes, i want to get this over with, to get the cancer out. >> reporter: you didn't have to say yes.