The tests in the Nevada desert come as tensions rise with Russia and the Pentagon seeks to replace its aging nuclear arsenal. A pair of U.S. Air Force B-2 bombers dropped two 700-pound faux nuclear bombs in the middle of the Nevada desert within the past few days. Now the Pentagon wants to tell you about it.Conducted “earlier this month,” according to an Oct. 6 press release, the test involved two dummy variants of the B61, a nuclear bomb that has been in the U.S. arsenal since the 1960s. One was an “earth penetrator” made to strike underground targets, the other...