Here is the Alaska Volcano Observatory website, with a whole host of information about Mt. Redoubt, including maps as well as images of the last time it erupted.
And now we have a couple of aerial photographs of Mt. Redoubt from the inimitable commenter at JustOneMinute, "Daddy", a pilot who lives in Alaska.
Daddy says that at the time the photos were taken, they were approximately 100 miles out on their descent into Anchorage, approximately 20,000 feet, looking South toward Mt. Redoubt. In the first photo, just below the summit, there is a plume of smoke which is the location of the forming caldera. In the second photo, you also have Mt. Iliamna in the distance, which has its own plume of smoke barely discernible on the left side of the peak.
Fascinating. Stay safe, Daddy.