Future operators
Wisła and Patriot Missiles - Pricetag of USD 4.75 billion. Contract Concluded
https://web.archive.org/web/20180402101241/http://www.defence24.com/wisla-and-patriot-missiles-pricetag-of-usd-475-billion-contract-concludedhttp://www.defence24.com/wisla-and-patriot-missiles-pricetag-of-usd-475-billion-contract-concluded
http://www.defence24.com/wisla-and-patriot-missiles-pricetag-of-usd-475-billion-contract-concludedWayback Machine - Wikipedia
https://en.wikipedia.org/wiki/Wayback_MachineRaytheon: Poland to acquire Patriot defense system - Agreement will create new defense industry jobs in U.S., Poland
https://web.archive.org/web/20180401201254/https://www.raytheon.com/news/feature/poland-signs-loa-for-patriotAttention Required! | Cloudflare
https://www.raytheon.com/news/feature/poland-signs-loa-for-patriotUS State Department clears Poland’s $10.5B request to buy Patriot
https://www.defensenews.com/land/2017/11/17/us-state-department-clears-polands-105b-request-to-buy-patriot/Poland has sticker shock over ‘unacceptable’ price tag for Patriot buy
https://www.defensenews.com/land/2017/12/06/poland-surprised-by-high-price-tag-for-its-long-awaited-patriot-purchase/
Operational history
Patriot Missiles Are Made in America and Fail Everywhere
https://foreignpolicy.com/2018/03/28/patriot-missiles-are-made-in-america-and-fail-everywhere/Doubt cast on Saudi missile interception claims
https://www.aljazeera.com/news/2018/03/doubt-cast-saudi-claims-houthi-missile-interception-180326124054084.html
Variants
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https://www.raytheonmissilesanddefense.com/news/2020/05/19/patriots-warfighter-machine-interfaceRaytheon integrates new interface into Patriot PDB 8.1 upgrade
https://www.army-technology.com/news/raytheon-wmi-patriot-pdb-8-1/Attention Required! | Cloudflare
https://www.raytheonmissilesanddefense.com/news/2021/08/16/patriot-progress-continuesAccess Denied
https://raytheon.mediaroom.com/2018-03-05-Eight-U-S-Allies-watch-newest-Patriot-upgrade-in-live-fire-testAccess Denied
https://raytheon.mediaroom.com/index.php?s=43&item=2359GhostEye: Nothing Goes Unseen
https://www.defensenews.com/native/raytheon-missiles-defense/2021/10/21/ghosteye-nothing-goes-unseen/Attention Required! | Cloudflare
https://www.raytheonmissilesanddefense.com/news/2020/10/02/soldiers-see-and-touch-full-scale-ltamdsThe soldier's perspective - New missile defense tech delivers a 3-D view for speed and accuracy | Raytheon
https://www.raytheon.com/news/feature/patriot-warfighter-machine-interfacePatriot force halfway thru major modernization
https://www.army.mil/article/225044/patriot_force_halfway_thru_major_modernizationAccess Denied
https://www.prnewswire.com/news-releases/us-army-awards-raytheon-717-million-to-continue-modernizing-patriot-fleet-228597781.htmlAccess Denied
https://raytheon.mediaroom.com/2019-06-17-Patriot-TM-air-and-missile-defense-system-upgrading-to-gamer-style-interfaceRaytheon supplying technology for GEM-T, the first missile to harness GaN
http://www.semiconductor-today.com/news_items/2018/oct/raytheon_161018.shtmlPatriot Missile Long-Range Air-Defence System
https://www.army-technology.com/projects/patriot/Access Denied
https://raytheon.mediaroom.com/index.php?s=43&item=2302
Introduction
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https://breakingdefense.com/2019/10/ltamds-raytheon-to-build-linchpin-of-army-air-missile-defense/Harpoon (series) - Wikipedia
https://en.wikipedia.org/wiki/Harpoon_(series)