being reviewed. emirates airlines is changing its rules. canadian regulators changing that country wide. what do these rules mean? if a pilot or co- pilot steps out, another crew member will stand on the flight deck so no pilot is left alone. many wondering why the pilot was not able to bash his way into the cockpit. we will give you an up close look at the door to show you impenetrable it is. the u.s. not partiescipateing in the attacks in yemen. now the saudis and egyptians are threatening to send ground troops in yemen if necessary. we have cnn's ian lee in cairo.