Easy. Usually you will get a mutiple entry visa withen a year. $ k% }( M- x) m
Just go to the U.S consulate in Calgary website and you will find the information. * O/ Y" A' b$ | _; d+ e- q
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# l* z' J0 Q4 J2 N% w+ J
good luck.