President Trump speaks to U.S. troops at Bagram Airfield, Afghanistan, on Thanksgiving Day 2019. The Trump administration says it's cutting U.S. forces from 4,500 to 2,500 troops in Afghanistan, one of several abrupt military moves announced recently. Alex Brandon/AP hide caption
U.S. Army soldiers take up a position during a patrol in Baghdad in 2007. The U.S. has been waging war nonstop for 15 years since the Sept. 11 attacks. Despite the protracted conflicts and disappointing results, U.S. involvement in multiple wars appears set to continue for years to come. Joe Raedle/Getty Images hide caption
Members of the American Widow Project cheer at the end of an annual event in San Diego. The organization's mission is to help heal and empower participants. Courtesy of Erin Dructor hide caption
Sgt. 1st Class Kristoffer B. Domeij.
U.S. Army Special Operations Command hide caption