Mounted on radar-transparent styrofoam pillars at Holloman’s radar target scatter (RATSCAT) site is the Apollo command and service module
U.S. Army Air Defense Artillery School
1969
<a rel="nofollow" class="external text" href="http://sill-www.army.mil/ada-online/air-defense-trends/_docs/1969/oct.pdf">Air Defense Trends</a>, October 1969, Page 63, Figure 3