Thanks for the kind words, Javier. Really just a fortunate coincidence. Although my focus point was on the foreground doors, I was really eyeballing the entrance opening at the end of the hallway to get the right comp and angle. But as soon as I saw movement back there, I clamped down on the shutter release since I didn't know what to expect.
He was in and out of the picture in about 2 seconds. Got off 6 frames. I like the top center one too but his right arm is in an odd position.
The shutter speed was 1/20s and hand held thanks to the I.S.