these doctors, they better watch their white coats and their privilege to practice. i want them to hear before they utter the word hipaa privacy, trying to keep this information secret, this information away from public. there is a public health concern exception to hipaa, where if your patient has become a public concern, public health concern, you must disclose the details so that public health concerns could be addressed. i hope his doctor is listening. i hope he will read public health concern exception to hipaa privacy rule. >> mr. khizr khan, gold star father, his son died fighting for our country in iraq. thank you for being here. you don't have to do this. it means the world, though. >> thank you. we've got much more ahead here tonight.