What are the responsibilities of the first due engine company at the fire scene of a high-rise building?

The high-rise building is of particular concern for fire departments because we can be faced with a fire on floors higher than our ladders can reach. The reliance on the building systems becomes a must and that reliability will be the difference between success and failure.
What are the responsibilities of the first due engine company at the fire scene of a high-rise building?
Please submit this assignment in a minimum of 600 words and in essay format. A cover page, abstract, main body and references pages are ALL required. If not properly formatted the instructor will deduct 5 points per page.