My father just got his visa, but there is an annotation which is " Tonawanda,NY June 19th- July 10th". Does it mean that my father can just stay for 21 days and must leave US at July 10th? The visa is issued at June 15th, and the expiration date is Sep. 15th, one entry. I am wondering how long my father can be in US? Whether US custom will give him 21days stay at US when they entered border? Whether he need to come to US at June 19th or he can come to US at whatever date before Sep. 15th? If my father plan to stay here for about 6 months, what else he can do? I am so disappointed to that visa coz it is because my error when I filled out that DS156. What I can do? Please, please help me!! Thanks a lot!!!!!!!