A midair collision involving two small planes in southern Arizona killed at least two people Wednesday morning, authorities said. Federal air-safety investigators said two people were on board each plane as they collided near Marana Regional Airport on the outskirts of Tucson. One plane landed uneventfully with the other hit the ground near a runway and catching fire, the National Transportation Safety Board said, based on preliminary information before its investigators had arrived. MORE: https://www.wthr.com/article/news/nation-world/plane-crash-arizona-midair-collision-aircraft/507-74fea805-bec2-4a46-a99b-aa55ccdaac4b