The Saudi student who fatally shot three people at a U.S. naval base in Florida hosted a dinner party earlier in the week where he and three others watched videos of mass shootings, a U.S. official told The Associated Press on Saturday. One of the three students who attended the dinner party videotaped outside the building while the shooting was taking place at Naval Air Station Pensacola on Friday, said the U.S. official, who spoke on condition of anonymity after being briefed by federal authorities. Two other Saudi students watched from a car, the official said. The official said 10...