Situation: whats your call?

[kcdusk]

Situation: A Humvee is driving down the road, through a European countryside.

Driver: He's scanning from 10 to 2 O'Clock as he drives. Every so often he checks the rear view mirror, glances at the fuel gauge and mentally calculates how far before they need to refuel. Recon or spotting skill is Low.

Front Passenger: He's doing what guys riding "shotgun" do. He's scanning 9 O'clock through to 2 O'Clock. He's running his finger along the map or mentally keeping track of their location. Recon or spotting skill is Medium.

Gunner: He's standing the rear of the Humvee, he has a 50 cal mounted GPMG. He's spending all his time scanning for ambush or movement. Recon or spotting skill is high.

When an encounter presents itself, who in the Humvee do you have roll for spotting/surprise? Do you use a particular person in the humvee? Or only roll for whomever has the highest skill? Or do you roll for all 3 people in the humvee?