foreign military forces participated
... that the state funeral of John F. Kennedy was the only one for a United States president in which foreign military forces participated?
... that the <a href="./State_funeral_of_John_F._Kennedy" id="mwA1w" rel="mw:WikiLink" title="State funeral of John F. Kennedy">state funeral of John F. Kennedy</a> was the only one for a United States president in which <b id="mwA10"><a class="mw-redirect" href="./Foreign_military_units_at_the_state_funeral_of_John_Kennedy" id="mwA14" rel="mw:WikiLink" title="Foreign military units at the state funeral of John Kennedy">foreign military forces participated</a></b>?