the tracks one on dirt and one through an open crawl space of the basement. >> the bulldozer is finally stopped. authorities prepare for a lengthy standoff but suddenly a single gunshot. >> we were unaware if this was somebody who was actually barricaded at this point, if he had committed suicide, or what the situation was. within just a few minutes of all this happening, the bulldozer shutting off, the tactical teams from the denver metro area and the front range begin arriving. >> unsure whether or not this is a ploy, sheriff trainor keeps the teams on high alert while they attempt to find a way into the dozer. >> finally, many, many hours later, they were able to actually use a cutting torch and cut into the top of the tank or the bulldozer through where that air-conditioning unit was and determine at that point that mr. heemeyer her died from a self-inflicted gunshot wound. >> sheriff's deputies later find