BOSTON (Reuters) - Law enforcement created "dangerous crossfire situations" while trying to apprehend the two suspects in the Boston Marathon bombings, according to a state report on the emergency response that was released on Friday. Police officers lacked "weapons discipline" during a gun battle with Dzhokhar Tsarnaev and his older brother, Tamerlan, who was killed a short time later, in the early hours of April 19, 2013, the report found. [snip] While the first officers in the Watertown gun-battle used their weapons appropriately, others later improperly self-deployed to the scene without assignments, the report said. "Additional officers arriving on scene...