Dear experts please help me with some points on the essay topic 'Disaster Management'?

(1)disaster management is a systematic poa.
(2) poa refers to plan of action 
(3) this plan of action designs for immediate implementation at the time of disasters or emergency situations.
disaster management can be undertaken with the help of systematic plan of action:
(1)emergency response
(2) relief
(3)recovery
(4) preparedness
(5) rehabilition