Maggie Rulli reports on the Americans on their way home after their luxury cruise ship was at the center of a deadly Hantavirus outbreak and Christiane Cordero has the latest on how the the CDC is responding to new scrutiny over its handling of the outbreak; Andrew Dymburt reports on the new video showing the moments a Frontier Airlines plane hit and killed a person at Denver International Airport; and more on tonight’s broadcast of World News Tonight with David Muir. ---------- 00:00 Intro 02: