Captains Rachel Butler and Tyler Mark help train U.S. Army soldiers from the 101st Airborne Division (Air Assault), who are earmarked for the fight against Ebola, before their deployment to West Africa, at Fort Campbell, Kentucky October 9, 2014. The U.S. military is ramping up its response to the Ebola outbreak in West Africa, where it has already killed more than 3,400 people in Liberia, Sierra Leone and Guinea. REUTERS/Harrison McClary (UNITED STATES - Tags: HEALTH MILITARY DISASTER)