We were 300 miles up the Dempster when we were approached by a Czechoslovakian research team who were living on the tundra, about 100 km off the only road in the area.  They had lost all their bear spray and had been “stalked” by 3 grizzlies for the last 5 nights.  The leader of the team was extremely worried.  He was asking all the travelers if they had any extra spray.  We didn’t bring any and I felt bad for them.  The closest place for anything like that was over 300 miles away.