Nike-X
Nike-X is a surface-to-air missile system or anti-ballistic missile.
Overview
Anti-ballistic missile system developed by the US Army in the 1960s.
In detail
It forms part of Project Nike.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Nike-X”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q20203096: Nike-X
Consult the source