more violence targeting troops in afghanistan. three soldiers died in three separate attacks including one american. yesterday another american helicopter excuse me, american soldier died in a blast in the southern part of the country. the latest violence comes as sols hillary clinton heads for afghanistan. she s taking part in an international conference in kabul to talk about the many problems facing the country. the u.s. military bars women from a combat unit. a congresswoman wants to change that since women are getting shot anyway. she says that the policy acts as a glass ceiling. here s our pentagon correspondent, chris lawrence. reporter: a california congresswoman said if women were allowed into tin fan triand other combat jobs it would open up more promotions and better prepare them from the attacks and ambushes they face in the war zone. they don t get enough of that teheraning. enough of that time. reporter: but the army said all soldiers deployed to iraq or afghani