States request assistance from other states through interstate mutual aid and assistance agreements such as: A. Economy Act or other applicable authorities B. Emergency Management Assistance Compacts (EMACs) C. Stafford Act D. Tiered Response

B. Emergency Management Assistance Compacts (EMACs)

Explanation:

States request assistance from other states through interstate mutual aid and assistance agreements such as: Emergency Management Assistance Compacts (EMACs)

Emergency Management Assistance Compacts (EMACs) is an interstate mutual aid agreement that facilitates the sharing of assistance among different states of America and territories during emergency events, disasters(natural and man made ), it has become one of the most used interstate compacts in existence because it became easier to gain help and support during emergency and disastrous times.Emergency Management Assistance Compacts (EMACs) was ratified by the United States Congress in 1996.

Emergency Management Assistance Compacts (EMACs)  provides an organized structures which allow States to ask for any knid of aids and help such as supplies, services, equipment, personnel from other states during emergency. It establishment does not replace Federal assistance during such events but acts to complement Federal resources at such time.

81 is a composite number.