Most of the group's training camps, along with logistics infrastructure, are located in the rugged Bekaa Valley in eastern Lebanon near the Syrian border. This command is possibly called the "Haidar Unit". Hezbollah operations in this area are particularly centered around the town of Baalbek. North of the Litani River, the Nabatieh Heights store the group's long-range rockets and provide defensive depth. These are apparently part of the Beirut command, which is headquartered in Dahieh, Beirut, and is also responsible for command and control, intelligence, and propaganda. Finally, the group's operational core is located south of the Litani near the Israeli border, with large numbers of short range rockets, fighters, and fortifications. This group, known as the Nasr unit, conducts most of its fighting from villages, with fighting also occurring in the mountainous countryside. The small Mediterranean command, which some sources do not mention, overseas frogmen, coastal surveillance, anti-ship missiles, and "naval assets".