Here's the fixed Calgary Herald link:
http://www.calgaryherald.com/news/c...sappearances+Nathan+Brien/10001950/story.html
I recall reading it. Frankly I suspect a minor piece of bad wording or jumping to conclusions there. The camera probably doesn't show the truck "circling the neighborhood" because the vantage point only shows a small section of street, not the whole neighborhood.
It probably shows the truck appearing multiple times throughout the course of the night. That could just as easily mean the truck was there at 11pm, then did some runs to and from Airdrie, appearing again at 1 am, 3 am, etc. It all depends on how long between the sightings. A few minutes? Sure, then it probably was "circling the neighborhood". But longer gaps in between appearances could mean multiple visits to and from the house.