according to arlington police chief will johnson. >> i have found several decisions made on scene to be troubling. >> reporter: the chief laid out a time line that shows at 1:15, officers found the dealership's gate busted open. at 1:17, taylor is spotted by the five officers on the scene. but at 1:18 when officers discussed setting up a perimeter, officer miller violates policy by separating from his training officer and goes into the showroom. the unarmed teen reportedly charged and cursed at the officer who fired four times while his training officer fired his taser. >> we've got shots fired. >> this fear and feeling of isolation was the result of his poor decision to enter the building without assistance and without an arrest plan. >> reporter: the chief's decision to fire miller surprised attorney and former police officer pete schulte who thought it was premature. >> there may have been a rush to terminate the officer. we certainly don't have the toxicology results back from the deceased, and i think that would have been a tell-taling sign of what actually happened in this case

arlington police chief spoke at last night's gathering. >> i can never promise you that we will not have a crisis in arlington but i can promise you, we will respond with compassion, we will respond with love and we will respond with accountability. >> miller's attorney says his client was trying to save his own life and those of other officers when he opened fire. >>> authorities say toxic waste from a colorado mine threatens to pose long term health risks to water supplies in several states. the 3 million gallon spill accidentally unleashed by e.p.a. workers has dissipated as it made its way along the arizona/utah border. >> while it's no longer visible because it's being dispersed, we are taking the necessary tests, looking at the wildlife, fish all the kind of work we need to do and responding to folks, drinking water and cattle water and those kind of things. >> the e.p.a. stopped field work in all abandoned mines while the spill is being investigated. >>> coming up on the morning news, a fiery accident caught on video. a collision results in a massive ball of flames in new jersey.