Yes, it only makes sense considering our airmen, soldiers, sailors and Marines. They're old enough to go kill and be killed, but not old enough to drink legally? Crazy. That's why they lowered the voting age to 18 during the Vietnam War, people were up in arms about it. Old enough to die, but not old enough to decide who sends them to die.
Now, I'm not a fan of drinking at all, but it should be lowered, yes.