Sierra Leone has recorded one of its deadliest days since the Ebola disease broke out earlier this year. Figures released Saturday show 121 deaths and 81 new infections in a 24-hour period. The overall death toll has topped 3,400, but the actual number is likely far higher. As the crisis continues, the United States has ordered an additional 1,000 troops to West Africa, bringing the current deployment to around 4,000.