Coast Guardsmen assigned to the depot engaged in advanced training on San Diego Bay Jan. 6. Training consisted of high speed pursuit maneuvers, and using gunfire (firing blanks) to control opposing forces trying to pass through security lines. - Coast Guardsmen assigned to the depot engaged in advanced training on San Diego Bay Jan. 6. Training consisted of high speed pursuit maneuvers, and using gunfire (firing blanks) to control opposing forces trying to pass through security lines.