¿Puede ser para que en caso de golpear la cara del que va detrás no hacerle daño?
Por cierto Fred Flinstone, tienes razón, fue el DevGru el encargado de la protección de Karzai.
Citar:
Karzai Close Protection Detail
Early into the invasion of Afghanistan, the US military offered to provide President Hamid Karzai with US special operations personnel, to include a small team from DevGroup, to serve as his close protection detail, an offer to which he readily agreed. This decision bore fruit on 5 September 2002 when a terrorist wearing a stolen uniform of an Afghan National Army soldier opened fire with an automatic weapon on Karzai's black Mercedes (driven by a DevGroup operator alongside a fellow SEAL as front seat passenger) as his personal convoy drove through a large, cheering crowd lining a narrow roadway in the city of Khandahar. The initial burst of fire wounded a senior Afghan official and a member of the DevGroup protective detail. Reacting as they had long trained, SEALs immediately returned fire, killing the terrorist and an Afghan bodyguard standing nearby.