23 Confined Spaces J. Emergency Response and Rescue Iowa State University will rely on rescue personnel from the Ames Fire Department, Iowa State University Police Department and Mary Greeley Medical Center Ambulance Service in the event of an emergency during a confined space entry. The Iowa State University Department of Public Safety (DPS) will assist in crowd and traffic control during an emergency. These emergency services are accessible by dialing 911 from any campus telephone. If calling from a cell phone dial (515) 294-4428 to reach DPS dispatcher. To facilitate non-entry rescue, rescue retrieval systems (harnesses, ropes, etc.) must be used by Authorized Entrants unless use of those systems would result in an increase of overall risk of entry, or would not contribute to the rescue of Authorized Entrants. External retrieval should be attempted only after emergency rescue personnel have been summoned.