Old camera tracking telescope called The IGOR (“eye-gore”) it was used to recorded experiments at high speed up to 100 miles away. Active from 1951 to 1965
If you are ever in the White Sands area check out the rocket park museum.
Most warning signs in National Parks are for dangerous wild life. White Sands National Monument in New Mexico, shares space with an active missile range so occasionally a part or two can be found in the park.