We're getting word that something chaotic is going down right now at Presidio & California. If you know anything, let us know in the comments. Oh yeah, and steer clear from Presidio & California for right now. If you can. 6:30 p.m.: Tons of fire engines all over the scene -- can't get any closer. Roads blocked by firemen. Presidio and Washington seems to be center of activity. Strong gas smell, but can't confirm that's......