Obtained secrets about at least seven separate U.S. nuclear weapons and warheads, including several nuclear warheads still at the core of the U.S. arsenal, like the W-87 for the MX missile and those used on U.S. Minuteman long-range missiles, and on submarine-based Trident nuclear missiles.
The government's process of certifying "high confidence" in the nuclear stockpile involves randomly selecting for testing about 11 units from each of the nine deployed nuclear warheads on land- and submarine-based intercontinental missiles and bombs on aircraft.