I was the District Wildlife Supervisor for that part of Missouri from 1992-1995 and stationed at the Busch Wildlife Area. In fact, I lived on the area. The original archery range was in a very nice woodlot and was built by Earl Hoyt's archery club many decades ago. It looks like the static range in this picture is relatively new. One thing about the Busch area, it is only 26 miles from St. Louis. There are a lot of fine folks and too many not so fine folks from St. Louis who visit Busch. During my stay at Busch two murders and a couple of suicides occurred on or near the area.
MDC is a top-notch organization and I'm sure they will make the necessary repairs. Of course the vandals may return. I'd bet, sorry to say, the vandalism was done by the usual drunken teens and early 20's crowd.