Once refitted, the Iwo Jima Marines began training for Operation Longtom, a joint Army-Marine landing on the China coast to seize land for air bases to attack Japan. As we have seen, however, the Joint Chiefs just ordered Nimitz and MacArthur to proceed with Olympic with November 1 as the target date. Longtom was shelved indefinitely.
Longtom was a dead end; the Asian Market-Garden.