Final answer:
Line 3 in the AEROMEDEVAC request format is indeed used to provide the number of patients by type, ensuring proper medical evacuation resources are allocated.
Step-by-step explanation:
The statement that Line 3 in the AEROMEDEVAC covers the number of patients by type is true. AEROMEDEVAC, which stands for Aeromedical Evacuation, uses a standardized nine-line evacuation request format, and Line 3 specifically requires the information about the number of patients and their classification by precedence (urgent, urgent surgical, priority, routine, or convenience). By providing accurate details in this line, it ensures the right resources and care are available for patients during their evacuation.