Rob Orgel, a former Marine infantryman who now trains shooters as owner of Emergency Response Tactical, identified gaiters, GPS-enabled rangefinders, 550 cord and electronic callers as key predator hunting items after nearly twenty years afield. Gaiters keep snow, dirt and insects from boots and pants to reduce distractions. Rangefinders that drop GPS pins let hunters mark animal locations and planned positions for easier recovery and team movement. 550 cord handles hanging, repairs and dragging game while electronic callers, legal in some areas, play sounds away from the shooter so animals focus elsewhere.