Easy. Usually you will get a mutiple entry visa withen a year. : b/ o4 B. y( d# _% N+ }* b! A- i
Just go to the U.S consulate in Calgary website and you will find the information. 2 m/ X3 N9 N6 @: t- U( \6 w
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. ( [5 J5 t% Y v* `" M( D
good luck.