Marines from 1st Battalion 8th Marines watch a US Marine CH-53 helicopter drop flares as it leaves Musa Qala in Helmand province on December 14, 2010. The US-led NATO alliance in Afghanistan warned December 13 that foreign soldiers will face further violence in 2011, capping what has been the deadliest year of the war on record. (MASSOUD HOSSAINI/AFP/Getty Images)
