The enemy is everywhere.
When a small outpost is ambushed, a US Army squad must take the battle below ground on a high-stakes mission in a new type of warfare the likes of which they have never seen.
vietnam war
suicide mission
booby trap
1960s
military outpost
tactical warfare
close‑quarters combat
retrieval of secret documents
underground passages
hostile territory
survival pressure
enemy infiltration
military ambush
vietnamese jungle
enemy tunnels