Cartels prefer their small size, high ammo capacity and suitability for close-quarters combat, prosecutors say.

CNN: On the border: Guns, drugs -- and a betrayal of trust

But he ruled out a ground offensive, which would expose his soldiers to the risks of close-quarters combat.

BBC: News Online

The whole experience had a slightly surreal feel for a sport in which combat at close quarters inside and outside the ring is the norm, but one has to move with the times I guess.

BBC: Rogan and Harrison trade verbals

His combat experience includes close-quarters battle, desert patrols and training foreign allies, it says.

CNN: Ex-Navy sniper killed at Texas gun range