Army Cpl. Simranpreet Lamba (center) stands in formation with fellow soldiers before taking the oath of citizenship, prior to his graduation from basic training at Fort Jackson, S.C., in 2010. He was the first enlisted soldier to be granted a religious accommodation as a Sikh since 1984. Brett Flashnick/AP hide caption
Chagossians weep at the grave of their parents on Peros Banos Island April 10, 2006. Fifteen elders are allowed to visit once a year. AFP/Getty Images hide caption
Sgt. Courtney White carries her machine gun before a live fire exercise at the Marine base at Twentynine Palms, Calif. David Gilkey/NPR hide caption
As an Army chaplain in Iraq, David Peters administered last rites and grieved with survivors. When he came home, he says, he "fell apart emotionally and spiritually." Courtesy of Robert K. Chambers hide caption
A helicopter's eye view of a new ETU, funded by USAID and built by Save the Children. Kelly McEvers/NPR hide caption
Iraqi soldiers walk in Jurf al-Sakhr, south of the capital Baghdad, on Monday after Iraqi military forces retook the area from Islamic State militants. Iraqi forces, supported by U.S. airstrikes, have made limited gains in recent months, but critics are questioning whether the U.S. strategy is likely to succeed. Haidar Mohammed Ali/AFP/Getty Images hide caption
Afghan National Security Adviser Mohammad Hanif Atmar (right) and U.S. Ambassador to Afghanistan James Cunningham exchange documents after signing the Bilateral Security Agreement, with Afghan President Ashraf Ghani (rear, left) and Chief Executive Abdullah Abdullah in the background. Jawad Jalali/EPA/Landov hide caption
Members of Iraqi security forces are seen during a fight with Islamic State militants Sunday on the outskirts of the city of Ramadi. Reuters/Landov hide caption
The U.S. is providing supplies to combat Ebola. But people are needed as well. John Moore/Getty Images hide caption
US soldiers have intervened in during natural disasters such as the 2010 earthquake in Haiti. But a disease outbreak is more complicated. SSgt. Chad Chisholm/U.S. Dept. of Defense hide caption
U.S. Maj. Gen. Harold Greene was visiting an Afghan military training academy Tuesday when he was shot dead by an Afghan soldier, who was subsequently killed. Afghan troops who knew the attacker say he disliked the Taliban and they aren't sure what his motive was. U.S. Army/Getty Images hide caption