I don’t know of any other accident that has had this amount of impact on aviation but also in other industries,” one expert said of the 1982 crash.

Ronald Reagan Washington National Airport has been closed until at least 11 a.m. Thursday. Several flights out of Florida have already been canceled.

Kournikova, who stays mostly out of the spotlight, has been with singer Enrique Iglesias since 2001. Phyllis Fong, a 22-year veteran of the Agriculture Department, had told colleagues that she ...