From Appendix D to AR 210-50. Please note priorities 2 and 3. Emergency Work takes priority over all other work.
Immediate action is required.
Could require that workers be diverted from other jobs or committed to overtime to cover the emergency. A normal response time for emergency work is within two hours, or as close to an hour, as other emergencies allow. Work started as an emergency continues until the emergency is ended and the worker can down grade the priority. Then, if the work is not complete, but close to finished, the job will be completed. If it requires detailed planning or purchase of specific materials, the remaining work will be rescheduled.