Mil;itary Enlistments

First time military enlistments are running a bit behind, another product of a burgeoning economy, but re-enlistments, even from soldiers in combat zones, are running ahead of expectations.

What does it mean when the guys in the thick of it, closest to the action, at risk, on the ground and looking at things with their own eyes, decide to stay for another hitch?

They must believe in what they're doing.