Most of Hezbollah’s offensive stuff is sourced from Iran. They do use some American made military equipment, mostly rifles and a few other bits and pieces
We’ve long known that the Persians squirrel weaponry into Syria using commercial aircraft. They don’t dare move it around on the ground either to Syria or within. So it makes sense that most of it is stashed around the Damascus airport. What I’ve never quite gotten is why the Israelis allow Damascus to have a heavy airfield? They took out Gaza’s as soon as the muzzies started using it to shoot from. Notice how Basher never complains?