At 06:10, the 11 destroyers of Force J moved shoreward to begin bombardment, hoping to damage light gun emplacements and prevent the German 716th from mobilizing and moving across the beach. They were supplemented by additional raids by medium bombers and fighter-bombers of the RAF and USAAF, which dropped an additional 2,796 tons of ordnance on the five landing zones. While the medium bombers proved inaccurate, the Hawker Typhoon fighter-bombers proved more effective at attacking coastal defences. As the bombing runs continued to hit Juno, the destroyers and landing craft moved towards the beach and began close-range saturation bombardment. In addition to the destroyers of Force J—two Canadian, eight British, one French—bombardment was also provided by converted LCTs fitted with guns. Smaller, light-gunned landing craft were able to get closer to the beach and use their 6-pounder guns against German defensive positions. Additional firepower was provided by eight landing craft fitted with over 1,000 high-explosive rockets and 24 LCTs, each carrying four M7 Priest self-propelled guns. These field regiments, while still seaborne, were to fire heavy concentrations of high explosive and smoke shells against the four main "resistance nests" in "Mike" and "Nan" sectors, beginning half an hour before H Hour. Forward observation and fire control officers in the leading assault waves were to make the necessary adjustments to this neutralizing fire during the assault.