N.A.T.O. The defensive military alliance formed in 1949 by ten european countries. WARSAW PACT A military alliance formed in 1955 by the Soviet Union Netherlands. Norway.
Tank Rings. Tank rings filled with gravel lift the tank above the surrounding grade. This keeps the tank out of standing water and increases the life of the tank bottom.
Oxygen tank: An oxygen tank is a heavy metal tank that keeps the oxygen under pressure. The oxygen tank has different parts. Pressure gauge: This shows how much oxygen is left in the tank.