2016 Bagram Airfield bombing

The 2016 Bagram bombing took place on November 12, 2016, when a suicide bomber managed to penetrate the security layer of Bagram Airfield, which was at the time the largest U.S. military base in Afghanistan located about 45 km north of Kabul, detonating his vest near a group of soldiers who were en route to Modern Army Combatives Training. Four U.S. citizens were killed (2 soldiers and 2 contractors, while at least 17 others were injured, including 16 Americans and 1 Polish citizen. One injured soldier died a month later from complications due to injuries sustained in the blast, raising the total killed to 5.