US Navy Pilot Survival Distress Light Marker Vietnam
Vietnam era SDU-5/E US Navy or Air Force pilot survival distress light marker. Dated 1973. Complete with nylon pouch (used with the SV-1 survival vests which hadn't a specific housing for the light as the later SV-2) and cord still attached. Also issued to Special Forces in Vietnam to facilitate the airmobile exfiltration from jungle.