a series of 37 nuclear tests conducted by the United States in 1958 at the Nevada Test Site.

HARDTACK-Teak was an exoatmospheric high altitude nuclear weapon test performed during Operation Newsreel.https://www.nnss.gov/docs/docs_LibraryPublications/DOE_NV-209_Rev16.pdf It was launched from Johnston Atoll on a Redstone missile.