CNN) -- A Russian fighter jet buzzed dangerously close to a U.S. military plane in April, a U.S. official said Tuesday, describing the fly-by as "straight out of a movie." The Russian jet flew within 100 feet of the nose of a U.S. Air Force reconnaissance plane over the Sea of Okhotsk between Russia and Japan, a Defense Department official said. The fly-by "put the lives of the U.S. crew in jeopardy," the U.S. official said, calling it "one of the most dangerous close passes in decades." The incident occurred on April 23, the Defense Department official said, when a U.S. Air Force RC-135U aircraft flying on a routine mission over the Sea of Okhotsk was intercepted by a Russian Su-27 Flanker aircraft.