An 82-year-old Florida man was attacked without warning by a stranger aboard a commercial flight from Palm Beach to Charlotte, North Carolina, resulting in severe head and brain injuries, according to a federal lawsuit reviewed by The Independent . From the moment she boarded American Airlines flight 2485, Allisen Elizabeth Werner, 37, “began exhibiting erratic and emotionally unbalanced behavior such as loud singing and bellowing to herself,” plaintiff Walter Loughney’s complaint states. It says Loughney, 82, became “concerned” when Werner sat down next to him, but the cabin crew allegedly told him there were no other seats available. Loughney’s “well-founded fears were realized later in the flight,” when Werner’s conduct took a dark turn, the complaint contends. Suddenly, Werner turned to Loughney, “struck him with punches, and severely beat him, which resulted in serious injury to [Loughney], including injuries to his head and brain,” according to the complaint.…