The Jericho 1 missile, which can carry nuclear warheads or about 1,000 pounds of chemicals or high explosives, was launched from a missile-testing facility at Yavne, Israel, on April 6 and landed about 40 miles from the USS Anzio, they said. . . . [O]ne of the Defense Department officials ... said the repeated "no-notice" launches have made the Pentagon think that the Israelis are trying to prevent the United States from monitoring the tests and acquiring technical data about the operation of the Jericho.