Point man

person in the forefront; one who goes ahead to survey an area; one who investigates the possibilities

Point man is an American English term used to refer to a soldier who is assigned to a position some distance ahead of a patrol as a lookout, or to a man who leads or inspires others in a business or political role.
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Noun
1. someone who is the forefront of an important enterprise; "he is the president's point man on economic issues"
(hypernym) leader
2. a soldier who goes ahead of a patrol
(hypernym) soldier