Police have arrested a suspect in the brazen Manhattan killing of UnitedHealthcare’s CEO after a quick-thinking McDonald’s customer and an employee in Pennsylvania alerted authorities to a customer who was found with a weapon, mask and writings linking him to the ambush. Police said the 26-year-old suspect, identified by police as Luigi Nicholas Mangione, was taken into custody Monday after police got a tip from a quick-thinking employee. (AP Video by Ted Shaffrey)