They are lovely red berries, as you can see. The plant in question is Autumn olive, Eleagnus umbellata. The foliage is bright green above, and silvery beneath. This species of eleagnus was introduced by the Soil Conservation Service for conservation purposes. It fruits heavily, with the red berries almost encircling the stem.
Birds love it, and the flowers smell heavenly in the spring.
I have been told the fruits are edible, but I have never tried them. We have some large shrubs around our house. I recently noticed a silvery white appearance on the upper and lower surfaces of the leaves. It is worse on the newer foliage and the underside of all the leaves. There are also small brown specks on the leaves and stems.