I visited the nest today around 2:00 PM. There was only 1 other person there upon my arrival. He informed me that I had just missed spotting one of the adults by 15 minutes.
One of the kids was in the nest and the other was on the branch right above the nest. Then the perched eagle hopped down to the nest and I had the good fortune to hear them vocalizing to the parents. After this and some wing stretching from one of the eagles, they hunkered down into the nest.
This is a picture of the eagle calling to the parents.