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The Priority 1 fire mission: call-for-fire (FM:CFF) message generated by a critical friendly zone (CFZ) violation does not include the impact grid--the CFO needed both the impact and origin to execute the battle drill.
The COR worked with the Fire Support Officer (FSO) to protect the teams from artillery by covering them with no-fire areas (NFAs) or critical friendly zones (CFZs)  that allowed the BRT's teams room for limited relocation of their LP/OPs when necessary.
Critical friendly zones were also established over the crossing area.