half past the hour here @this hour, the submersible drone bluefin-21 is conducting its 12th mission. that device has only about 10% left of the search area to scan. and as far as we know, the search of that remaining portion is under way as we speak. we ll have more on that missing jetliner in a moment. three american hospital workers were shot and killed in afghanistan today. allegedly by a security officer that was guarding the place that worked. it all happened in downtown kabul. authorities say the guard also shot himself but survived. cnn has learned that one victim was a pediatrician from chicago who moved to kabul nine years ago. afghan officials say the other two victims are a marry and son. this is such a tragedy. right now the motive is not clear. real concern about what s going on in ukraine. vladimir putin is warning ukraine over its military operations against pro-russian militants. he says if kiev is using its army against its own people it s, quote, a very serious
coming in, the lights had gone out. a nightmare situation. compounding the problem was an order which came over the p.a. system aboard the ship, telling people to put on your life jackets and stay where you are. in any maritime or naval disaster, the key thing is to get up from below, get top side, get on deck, where at least you can get into the water and possibly be rescued. so this order for people to stay where they are, not to move, is questionable. to say the least. it certainly is. all right, andrew, we ll check back with you. andrew salmon on the scene for us in seoul, south korea. let s go to perth, australia, in the search zone in the indian ocean, where an underwater vehicle is looking for any signs of flight 370. here are the latest developments. the submersible drone bluefin-21 resurfaced earlier today because of a technical problem but it was redeploy and is scanning the depth of the ocean right now. we could find out the results of