Explosives expert, former ATF investigator provides his take on the Phoenix area home explosion

Retired Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) investigator and explosives expert, Anthony May, watched the video of the explosion and says he saw something unusual. "You have the obvious blast on the right side of the screen … and to the left of that you’ve got a very strong fireball going somewhat horizontally across that, and that’s not typical in your normal explosions," he said.