announcing the first ever all-female spacewalk. kristin fisher has more on the historical moment in the making. reporter: 240 miles above earth, half a dozen people working on board the international space station. two are about to make history. nasa announced the first all-female spacewalk a national women s they. one of the astronauts is an mclean who is halfway through her 6-month mission. the 39-year-old is a west point graduate and lieutenant colonel in the army. a wharf it with a bronze star, a rookie in space. we are leading the table. there is no excuses. you can accomplish whatever you want to. you have to get out there and do it. reporter: her spacewalk partner is christina coates, she really arrived with fellow american and cosmonaut who had a brush with death when there lunch failed to minutes after takeoff. she is a 40y physicist and