NASA posted some video of the first stage of the Ares I rocket being test fired out in the desert. 22 million horse power. As powerful as this rocket is, it doesn’t compare to Ares IV and of course the Saturn V.
I get the impression you don’t want to be anywhere near the business end of this thing when it’s lit:
During the test the flame exited the rocket motor out of a nozzle at about mach 3 and burned for approx. 123 seconds and the temperature of that flame approached approx. 4500 F. This is approx two-thirds the temperature of the sun’s surface. At this temperature steel does more than melt, it boils. And sand that was placed around just aft of the rocket motor got hot enough to actually turn to glass