FOLSOM, Calif. --(From left) Jason Walsh and Sue Fox, safety specialists; and Dan Williams, safety officer from the U.S. Army Corps of Engineers Sacramento District, prepare to award certificates of completion for the yearly fire extinguisher safety training here, April 7, 2012. The training, mandated by Occupational Safety and Health Administration and conducted by the district's safety office, included a video presentation, group discussion, followed by a timed live-fire exercise.