Easy. Usually you will get a mutiple entry visa withen a year. : S" ^( M; e; o* H
Just go to the U.S consulate in Calgary website and you will find the information. 3 A! X7 R) P7 p
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. ' S7 I* v1 v1 b% v2 f Y1 i
good luck.