Excalibur (film)
"Excalibur" was the number one film during its opening weekend of 10–12 April 1981, eventually earning $34,967,437 in the United States. , it currently has a 78% "fresh" rating on Rotten Tomatoes based on 41 reviews.
Project Excalibur
The basic concept behind Excalibur was conceived in the 1970s by George Chapline, Jr. and further developed by Peter L. Hagelstein, both part of Edward Teller's "O-Group" in LLNL. After a successful test in 1980, in 1981 Teller and Lowell Wood began talks with Ronald Reagan about the concept. These talks, combined with strong support from a like-minded group that met at the Heritage Foundation, were a major part of the series of events that ultimately led Reagan to announce the Strategic Defense Initiative (SDI) in 1983. Further underground nuclear tests through the early 1980s suggested progress was being made, and this influenced the 1986 Reykjavík Summit, where Reagan refused to give up the possibility of proof-testing SDI technology with nuclear testing in space.