Question: The One-Million-Liter Test Sphere — also known as the Test Sphere, the Horton Test Sphere, the Cloud Study Chamber, Building 527, and the “Eight Ball” (or “8-ball”) — is a decommissioned biological warfare (BW) chamber and testing facility located on which United States Army Medical Command installation located in Frederick, Maryland?
Sentence (from "Fort Detrick"): Historically, Fort Detrick was the center of the US biological weapons program from 1943 to 1969.
Relevant evidence: No