Rock Solid Support

The rain prompted me to leave my camera at home, and of course, what do I pull up and see upon entering the base: this guy. He had been on the rock in the bottom left corner, but by the time I checked in with the gate guard, parked, and walked out with the blackberry, he was perched on the Rock. Why is it that when the sun is shining and you can see the ships at the pier- providing me with that oh so perfect backdrop- that this never happens?