You have always been a curious temperament and this time your curiosity leads you to visit a special exhibition on the theme of the army. What is special about this event is the tank that will be exposed exclusively. Too curious, you decide to go inside the tank and top it the only access to the tank closes and locks as you enter. You can still do not stay inside the tank without eating or drinking and especially not knowing who will think to look inside. So find anything that might be useful for you to get out of this unusual situation.