"Surely not US-based Hezbollah cells releasing an East Litani Virus?"
Not sure what you're talking about here ... what weaponizable virus is unique to the Jordan basin?
The name was a faux honorific to the "A team's" best fighters, trained in the Bekaa Valley, where such WMD's have been said to have been hidden, a lethal force crossing the eastern portion of the Litani to repel Israeli troops, a microcosm of the ill they might hope to use to wipe "U.S." out.
HF