You are supposed to get out of the way. Stop if you can, if you can’t because you’re in an intersection, go through and pull over at the nearest available curb. If you are at a red light and the emergency vehicle is behind you, slowly pull out into the intersection as soon as it is safe to do so and drive through and pull over when you leave the intersection to allow the emergency vehicle through. This is the only time you may legally run a red light, but you cannot just blow through the intersection. Basically try not to wait for the emergency vehicle to tell you to go through, but also don’t drive like a BMW driver.

Blocking an emergency vehicle, or refusing to let it pass, is a crime in basically every state.

Typically, do not keep driving. Pull to the right, stop, and wait until the emergency vehicle has passed you. This is supposed to be done even if the emergency vehicle is on the other side of the road. The exception to this is if there is a divider in the middle of the road, for example a curb or island. However, if there is no physical divider in the road, you must pull over in case the emergency vehicle needs to make a u-turn or enter oncoming traffic lanes for any reason.