Relevant:

- USAF Directed Energy Directorate home page during the years 1999–2006: https://web.archive.org/web/20060831035044/http://www.de.afr...

- USAF Directed Energy Directorate home page during the years 2009–2016: https://web.archive.org/web/20160428181404/http://www.kirtla...

- LASER Effects Test Facility fact sheet from 2002 showing a 50-kilowatt CO² LASER setting a test target on fire: https://web.archive.org/web/20070315131556/http://www.de.afr...