 New Jersey sailed to the aid of troops of the Republic of Korea once more 17 August , returning to the Kansong area where for four days she provided harassing fire by night , and broke up counterattacks by day , inflicting a heavy toll on enemy troops . She returned to this general area yet again 29 August , when she fired in an amphibious demonstration staged behind enemy lines to ease pressure on the Republic of Korea 's troops . The next day she started a three @-@ day saturation of the Changjon area , with one of her own helicopters spotting the results : four buildings destroyed , road junctions smashed , railroad marshaling yards afire , tracks cut and uprooted , coal stocks scattered , and many buildings and warehouses set blazing . 
