Under the terms of the 1972 Anti-Ballistic Missile Treaty, the US was permitted to deploy a single ABM system protecting an area containing ICBM launchers.

In December 2012, it was purchased by the Spring Creek Hutterite Colony of Forbes, North Dakota, at auction for $530,000 (equivalent to $703,389 in 2023).

[2][3] In 2020, portions of the property including the Pyramid were sold to the Cavalier County Job Development Authority (CCJDA) for $462,900.

[4] The CCJDA intends to build an interpretive historical center, restore the property, and sell or lease the pyramid to a datacenter or similar business.

The MSR and PSR sites are listed in the Historic American Engineering Record, a Heritage Documentation Program.