Excalibur (film)
When first released in the United Kingdom in 1981, the film ran to 140m 30s, and was classified as a "AA" by the BBFC, restricting it to those aged 14 and over. In 1982, the BBFC replaced the "AA" certificate with the higher age-specific "15", which was also applied to "Excalibur" when released on home video.
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.