AdvertisementAnalysisHere's How Presidents Have Responded To TerrorismAugust 31, 2021Ron ElvingfacebookEmailSydney Robison, center, looks on during a vigil for U.S. Marines Staff Sgt. Taylor Hoover Sunday in Salt Lake City. Hoover was among the 13 U.S. troops killed in a suicide bombing at Kabul airport. (AP)