Authorities have publicly identified two people killed last month in the midair collision of two small planes at a southern Arizona airport. Police say 70-year-old Michael Reinath and 76-year-old Linda Gifford died in the Feb. 19 collision at Marana Regional Airport on the outskirts of Tucson. Reinath and Gifford lived in Rio Vista, California. Investigators say each plane had two people aboard when they collided. One plane landed uneventfully and the other with Reinath and Gifford on board hit the ground near a runway and caught fire…