The answer to your question is YES. There are two reasons why that is: the Viet Nam War and the 26th Amendment to the Constitution, which lowered the voting age from 21 to 18 in 1971. This allowed 18 year olds to enter into legal contracts without parental consent.
tank. 1. a large container or structure for holding a liquid or gas. 2. an armored combat vehicle, moving on caterpillar treads and usu. armed with a cannon mounted inside a rotating turret. 3. a prison cell for more than one occupant, esp. for groups of new prisoners. 4. a natural or artificial pond, esp. for storing water.
tank. Noun: A player-character, typically in a MMORPG, that is able to occupy an agressor and take the brunt of the aggressor's attacks while the other players deal damage, heal, or perform some other action. The tank can survive longer while taking damage than the other characters. Typically, the tank has higher hitpoints (health) and a higher armor rating than the other characters. Less commonly, a character with a lower armor rating can perform the actions of the tank by using avoidance abilities. Ultimately, the tank needs to be able to occupy the agressor without dying.