Lt. Tal Tzemach of Kibbutz Huldah was killed late last night when two Palestinian terrorists infiltrated a military training ground near the Jordan Valley community of Mecholah. They also wounded three soldiers, including two now listed in moderate condition. The attack occurred around 1:30 in the morning. The Jordan Valley Regiment Commander, Col. Yechiel Sofer, together with the commander of the exercise, hurried to the site and killed both terrorists. Two Kalachnikov rifles and 11 clips were found next to their bodies.