i was in my Bulldozer on a waste dump at 1930 meter elevation looking eastwardly during my nightshift on april 10th, 2010, at a coal mine north of Grande Cache, the position i was in gave me a wide panorama of the rockies to my right and the foothills to my left. and noticed a red flashing light pass overhead from the northwest travelling southeast at 3:40 A.M.the morning of the 11th, i could not see any shape,only the red light that flashed brighter red intermitantly, it seemed to be going in a straight path, no noise, i asked on the two-way radio if anyone else saw the light, but none of my coworkers saw it. it only took a few minutes to cross the sky before i lost sight of it, it was dark but clear sky overhead