Estate planning is not only about preparing for one's death. It is also about preparing for when a person becomes seriously ill or injured but is still alive in Maryland or in any other state. In this condition, a person may be incapacitated, which means he or she is not able to make decisions for himself or herself. This is where a power of attorney document comes in handy. There are two types of power of attorney documents -- a durable power of attorney and a health care power of attorney.