Law enforcement agencies, fire personnel, EMS and other first responders participate in an active shooter drill exercise on Wednesday morning at Bullard Middle School. (Bullard Police Department/Contributed Photo)Law enforcement agencies, fire personnel, EMS and other first responders participate in an active shooter drill exercise on Wednesday morning at Bullard Middle School. (Bullard Police Department/Contributed Photo)Law enforcement agencies, fire personnel, EMS and other first responders participate in an active shooter drill exercise on Wednesday morning at Bullard Middle School. (Bullard Police Department/Contributed Photo)Law enforcement agencies, fire personnel, EMS and other first responders participate in an active shooter drill exercise on Wednesday morning at Bullard Middle School. (Bullard Police Department/Contributed Photo)BULLARD — Multiple public safety agencies joined forces Wednesday morning at Bullard Middle School for an active shooter training exercise.