https://santamariatimes.com/news/local/military/vandenberg/vandenberg-breaks-ground-on-sentinel-training-facility-we-are-preparing-to-train-the-force-that/article_92db762d-d034-440a-bfc8-a6e3ff777f54.html

"Vandenberg breaks ground on Sentinel Training Facility: 'We are preparing to train the force that will lead us into the Sentinel era'"

U.S. Space Force, Staff Sgt. Joshua LeRoi , Space Launch Delta 30

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https://www.ksby.com/lompoc-valley/vandenberg-space-force-base-breaks-ground-on-113-million-sentinel-training-facility

"VandEnberg Space Force Base breaks ground on $113 million Sentinel training facility"