Each crew flying the transpolar route over the Arctic was equipped with a winter survival kit, including a 7.62 mm selective-fire AR-10 carbine for use against polar bears, in the event the plane was forced down onto the polar ice.
Cada tripulación que realizaba a ruta traspolar sobre o Ártico estaba equipada cun kit de supervivencia de inverno que incluía unha carabina de fogo selectivo AR-10 de 7,62 mm para usar contra osos polares, no caso de que o avión se vise forzado a aterrar no xeo polar.