Amazon has picked Canada as one of its testing grounds for the drones that the online retail giant hopes to one day use to deliver packages to customers within 30 minutes of receiving an order, the company confirmed Monday.Spokeswoman Kristen Kish said the company is operating a testing facility in rural British Columbia, though she declined to reveal its specific location.The B.C. test site is one of several international locations set up to help get Amazon's Prime Air project off the ground both literally and figuratively.