DAYTON–Friday, October 25, dawned just like any other day for the residents of Dayton, but before the day hardly got started, the community's emergency services, school administrators and hospital staff would be tested with a [mock] disaster involving an explosion of an undetermined cause at Dayton High School.

When it was all over at around 11 a.m., the exercise had put various systems and people in the community to the test. A formal debriefing of all involved is scheduled to identify critical points and to develop improved procedures.

-Chronicle photo

One of the victims is removed from the hazardous scene.