Easy. Usually you will get a mutiple entry visa withen a year. 3 H$ O+ ?" s" C
Just go to the U.S consulate in Calgary website and you will find the information. 8 y$ f& y* n) M t
You need to book the interview in far advance, usually a month or half a month prior to the interview. Sometimes if you are in a hurry, you have to go to Vancouver for the visa. - p% T" `' K8 C% P: ?( z2 a& M; G
good luck.