Spacewalk-ah hian astronaut Anne McClain leh Christine Koch te chu khawvel a\anga mel 240-a hlaah an kal dawn a, NASA thupuangtu Stephanie Schierholz chuan he mission endik-a \anpuitu controls-ah pawh hmeichhe hlang dah vek an ni dawn tih a sawi.
McClain leh Koch hi kum 2013-a NASA astronaut class a mi an ni a, McClain hi US Army-ah major leh pilot nilai a ni a, Koch hi electrical engineer a ni a, South Pole leh Arctic-ah te hna a lo thawk tawh a ni.
