A scary incident occurred during Thursday night's action at the U.S. Open in a match between Flavia Pennetta and Monica Niculescu, as a drone crashed into an empty seating section in Louis Armstrong Stadium.br According to Chris Chase of USA Today, police arrested a 26-year-old teacher who was charged with reckless endangerment.br No one was injured as a result of the incident, though Pennetta is quoted in the report saying it shook her up.br "It was a little bit scary, I have to say," Pennetta told reporters.