It’s a sunny day and you’re driving down a backcountry road far from any military bases. Out of nowhere, you spy several dozen adults in camouflage marching together as if they’re a military unit on patrol. That would be out of place enough by itself. Add to it that they appear to be clad in gear resembling that of another nation’s military. You’d probably grab your phone and capture video of the incident. Salt Spring Island is a sleepy resort island off the Vancouver coast in British Columbia, Canada. You can only get there by ferry or seaplane. In June...