Ground/Air Emergency Code Card: This is a required item in US Naval survival vests and ejection seat kits. The laminated card shows how to communicate to air units when radio communication is not possible. The front of the card shows different symbols to make using fabric, parachutes, wood, stones, or any other available material in order to advise of your situation. The rear of the card shows signals with life raft paulin and body signals. Measures 5.5" x 3.25".