The public affairs officer for the 1st Battalion, 44th Air Defense Artillery Regiment (1-44th ADA), part of the 69th Air Defense Artillery Brigade at Fort Hood, told The War Zone that the unit was executing a relatively rare deployment where they set up shop in an unfamiliar location, just as they would during a crisis. After setting up their gear, which as you can see in the images below is quite extensive, as well as an operations center, they will operate as they would in a wartime-like setting and run drills associated with a real-world deployment. This includes defending against air-breathing threats, such as airplanes and cruise missiles, and high and fast-flying ballistic missiles. It’s worth noting that there are no live missiles being used as part of the training evolution.
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We reached out to the Easterwood Airport's administration and they had very little knowledge of what exactly was the deal with the Army setting-up shop on their grounds. They mentioned that around 300 soldiers accompanied the radars, command and control elements, and multiple transporter-erector-launchers that make up the Patriot system that is currently arrayed along Taxiway G and Runway 11-29 at the airport.