Hi...
Some disasters can result from multiple hazards, or, more often, to a complex combination of both natural and man-made causes which involve a break-down of authority, looting and attacks on strategic installations, including conflict situations and war. These can include

Food Insecurity

Epidemics

Armed Conflicts

Displaced Populations

According toICRC theseComplex Emergencies are typically characterized by

Extensive Violence

Displacements of Populations

Loss of Life

Widespread Damage to both Societies and Economies

Need for Large-scale, Humanitarian Assistance across Multiple Agencies

Political and Military Constraints which impact or prevent Humanitarian Assistance

Increased Security Risks for Humanitarian Relief Workers

Disaster relief operations typically involves a series of steps including establishment of communication infrastructures, performing search and rescue operations, and providing any needed first aid services. Disaster networks can be classified as disaster mitigation networks and disaster relief networks.

• Mental Health Experts
• Medical Care
• Army / NDRF
• Emergency team

And many more , combined efforts from them help us out fighting and getting secured from disasters.

Good luck.