Vtg US Army / Navy Aircrew Survival Strobe Light Distress Marker SDU-5/E Orange
US Army or Navy SDU-5/E Distress Marker Strobe Light
This distress light is in good physical condition w/some scratches from issued use.
Has a battery, but the battery is dead. Batteries and Battery Adapter can be found online.
I will include the adapter contact info with purchase. Free shipping within U.S. ONLY !
The SDU-5/E strobe light was issued with various aircrew survival vests and life preservers. It was waterproof and produced an intermittent flash of light visible for beyond five miles. This strobe was used for Special Forces Operational Detachments during night HALO jump operations. Army and Special Forces recon units also used the SDU-5/E at night to mark their position on the ground to circling planes. In such cases the strobe was placed inside the barrel of an M79 grenade launcher so that only those above the end of the barrel would see the flash, thus preventing the enemy from seeing the exact position of the team.