combat. >> shepard: few people can speak to that better than tammy duckworth, the first female double amputee of the iraq war. >> we were hit by an hpg. it ripped through our aircraft t took off my legs, most of my right arm. >> shepard: she supports the decision to lift the military combat restrictions. >> lifting the restriction is going to allow those women who want to fight in combat positions to try and to try out for them. if they can make it, good for them. there is a lot of women who won't make it. but there is a lot of men who can't make it either. >> shepard: no question there. president obama responded to the pentagon's change with a statement that reads in part: today every american can be proud that our military will grow even stronger with our mothers, wives, sisters and daughters playing a greater role in forgetting the country we love: jennifer griffin with the news at the pentagon. first, explain how this will work. >> no positions have been opened to women as of today, shep. but 230,000 positions could soon be open to women as early as