The militant group, Fatah al Islam, which is thought to have links to Al Qaeda, fired antiaircraft guns and mortars and had night vision goggles and other sophisticated equipment. The Lebanese Army does not have such gear.
Lebanese Army and Islamists Battle for 2nd Day – New York Times
This is a really disturbing development. With insurgents using GPS to aid in targeting and terrorists using night vision goggles; the US Military is starting to lose its greatest advantage in the GWOT; high-tech weaponry and training.