The SNCASE SE.212 <i>Durandal </i> in flight. The <i>Durandal</i> was a French jet and rocket mixed-power fighter aircraft which first flew on 20 April 1956. Designed in parallel with the lightweight fighter-bomber projects destined for the 1953 NATO Fighter Competition that resulted in the winner, the Fiat G.91 and a number of "also-rans." The SE.212 arose out of the same thinking but devolved into a dedicated point-defence interceptor. Despite promising results in tests, the project was cancelled.
USN
U.S. Navy Naval Aviation News September 1956 <a rel="nofollow" class="external autonumber" href="http://www.history.navy.mil/nan/backissues/1950s/1956/Sep56.pdf">[1]</a>, p. 23.