MUSA QALA, Afghanistan – The Marines had been on the road for less than an hour from Combat Outpost Shukvani when their resupply convoy hit its first hint of trouble. The logistics train, overseen by Combat Logistics Battalion 2, out of Camp Lejeune, N.C., was pushing through Helmand province when it came upon a likely improvised explosive device that troops from the nation of Georgia already had marked and cordoned. The Marines rolled around it but took harassing gunfire a few minutes later. “Drader, be advised: They said they’ve been taking pop shots from the right side of the road!”…