 Complete the following phrase:  After a period of intensive training and preparation, she departed Majuro on 6 June for the invasion of the Marianas, a spectacular amphibious operation to be carried out nearly 1,000 miles 1,800 km from the nearest advance base, Eniwetok. Again acting as screening ship for the carriers, Healy supported softening-up raids 1115 June and protected them during the period of direct support as Admiral Richmond Kelly Turners Marines 