something many have never done. >> you experiment with different techniques. you figure out what other exercises to do. >> reporter: critics say the big push over pull-ups is part of a bigger problem, pressure from the white house to make the military gender neutral. >> something is wrong here. and it's not the women's fault. it's the policy that the marines are pursuing. >> reporter: still, some women are clearly ready. 13 female marines have just passed the grueling 60-day infantry training course. but this postponement, it's a setback for the plan to move thousands of women into combat roles by 2016. now, the marines could impose the three-pull-up standard next year, but there's no guarantee. fred? >> thanks so much, chris lawrence. all right. a new piece of the puzzle in the michael schumacher accident. will a helmet camera show what really happened? and the bitter cold in the u.s., wait until you hear what's coming next from mother nature. [ sneezes, coughs ]