HEZBOLLAH FIGHTERS EXCHANGED HEAVY FIRE TUESDAY WITH ISRAELI SOLDIERS IN THE SOUTH LEBANESE VILLAGE OF AYTA ASH SHAB, THE ARMY SAID, BUT DID NOT IMMEDIATELY REPORT CASUALTIES. THE FIGHTERS FIRED ANTI-TANK ROCKETS AT TROOPS IN A HOUSE IN THE VILLAGE, THE ISRAELI ARMY SAID. ISRAEL AND HEZBOLLAH HAVE BEEN WAGING A FIERCE BATTLE SINCE JULY 12 WHEN THE GROUP KILLED THREE SOLDIERS AND CAPTURED TWO OTHERS IN A CROSS-BORDER RAID, ACCORDING TO A REPORT OF THE ASSOCIATED PRESS.