An improvised explosive device blew out windows and ignited a small fire at the Jackson County prosecutor's office in Medford, Ore., Wednesday, but authorities said the damage could have been far worse had it ignited a large propane tank at the scene. No injuries were reported as a result of the blast, which occurred at about 4:30 a.m. Local and state police and the FBI and ATF are currently investigating. Law enforcement sources familiar with the case said there was no immediate claim of responsibility and as of yet, there are no suspects, but they are attempting to determine if...