Revhort is on track.
That looks like a fine healthy fructiferous specimen of Viburnum prunifolium - Blackhaw Viburnum.
A few more pictures of dormant buds on the branches would absolutely confirm. A similar species, Viburnum rufidulum (Rusty Blackhaw Viburnum), will have very rusty brown dormant buds as opposed to dull gray dormant buds on Viburnum prunifolium. Despite good images of the terminal fruit clusters, few buds show up very well in the pictures provided and none appear to be the very dark rusty color.
Blackhaw Viburnum fruit is quite tasty, reminding me of wee prunes in its flavor...
