A Southwest flight to Orlando created a nightmare for passengers Saturday after a serious mechanical malfunction led to the complete failure of one of the plane’s engines. Passengers aboard Flight 3472 reported hearing an explosion as they were at or near cruising altitude Sunday morning. As the plane began to descend, the cabin depressurized and caused oxygen masks to drop from the ceiling. Along with photos later posted to social media, some passengers reported hearing screams in the cabin as babies wailed and some people were able to look out the window at a heavily damaged engine.