The Phoenix Lights - Flares and Helium?
Here in Arizona we have been under a red flag extreme fire danger warning for weeks due to dry and windy conditions. Last Sunday a brush fire was caused by a tire blowout. No one in their right mind would launch flares into the sky suspended from weather balloons, they would be arrested!
http://www.ufodigest.com/news/0508/flares-reappear.html
