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.
A Tank is a role performed by a character who works to direct enemy attacks or attention toward themselves in order to protect other characters. In Player vs. Environment settings (PvE), tanks are nearly always at the center of combat. Tanks must do two things to be successful: first, the tank must be the party member attracting the attention of all creatures (typically by using a game mechanic that forces it to be targeted, known as threat generation).