Al qaeda militants earlier in the week. the u.n. estimates that at least 519 people have been killed since the saudi-led air strikes began last month. they are trying to remove rebels from yemen backed by saudi arabia s chief rival, iran. the last investigators left the crash site in the french alps. they are focusing on analysis of the flight data recorder which now shows the co-pilot lubitz purposely used the controls to speed up the plane s decent for it crashed, and they are looking at cell phones recover the from the crash site. here s a look at the develops now. we are following the investigation from germany, and we have a criminal defense attorney who has handled numerous federal cases and has helped resolve international criminal cases around the world, and we have a former fbi agent ....