A sentinel is a person or thing that stands guard, controlling access to a particular place. In Michael Campbell’s Sentinel – Entry and Sentinel – Display, the objects grab our attention but their functions seem meaningless in the desolate landscapes. Exactly whose access do these objects control and for what purpose? Both photographs are a part of the artist’s Sentinel project, a series of digitally constructed works that fuse landscapes captured in the Crowsnest Pass, Alberta, with objects photographed in airports around the world.