13F is far from the water. We have lite and heavy. Lite, ruck sack and hike most places. Heavy means you ride in an armored vehicle, occasionally rucking. Yes math is a. Requirement, it is the requirement as you are guiding munitions from mortars to fixed wing weaponry in on a target and it must be precise, the observers life and the life of innocent civilians and Soldiers is in jeopardy.
Math is needed yes, until you can "scope" a moving target and it's interception point. As a Sgt your going to be tested ALOT by the SPC in the field who will know far more then you in the job. Read up man, get to know those 15 subs and 6 elements of fire. Get with a Sgt fister, learn about FPF lines, and fuses.
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