What a soothing thing for a Muni bus driver to announce. What are we talking about? This: Civic Center Blog has a first-hand account a benign bomb threat that happened Wednesday at--where else?--the Civic Center. CCB was riding the 5-Fulton when it came to a stop and the non-explosive drama ensued. But the best part? The nifty little robot that checked the area for any potential ka-booms. This little guy is checking out a......