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Articles by Saemi Chang
Multiscale Wildfire-Evacuation Modeling: Assessing Differential Access to Safe Egress in Marin County, CA
Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. References , , and . 2025. “Functional Isolation: The Compounding Burden on Community Capacity From Cascading Infrastructure Failures and Access Disruption.” International Journal of Disaster Risk Reduction 118: 105–190. , and . 2008.
304th ESB-E Holds Change of Command Ceremony [Image 3 of 10]
7 A U.S. Army Soldier presents flowers to Mrs. Eisenhut, the wife of incoming commander LTC Benjamin J. Eisenhut, during the 304th Expeditionary Signal Battalion-Enhanced Change of Command ceremony at Freedom Field, Camp Humphreys, Pyeongtaek, Republic of Korea, May 28, 2026. The ceremony was held to conduct a change of command. Family members were recognized during the ceremony in appreciation of their support.
1SG Scott Schmidt retires after 20 years of active service [Image 5 of 6]
7 U.S. Army Command Sgt. Maj. Corrie Moore, assigned to the 41st Signal Battalion, shares a joyful moment with 1st Sgt. Scott Schmidt during a congratulatory speech at Schmidt's retirement ceremony at Camp Humphreys, South Korea, June 4, 2026. The ceremony celebrated Schmidt's military achievements and the unwavering support of his family throughout his 20 years of active service.
41st Signal Battalion MST upgrades regional tactical communications [Image 6 of 10]
7 A U.S. Army soldier assigned to the Maintenance Support Team climbs a ladder on a communications tower during a regional tactical communications upgrade, May 2026. The team climbed high-altitude infrastructure and secured heavy-duty cabling to ensure network reliability.
Thanksgiving Meal Service at Talon Cafe Warrior Restaurant [Image 3 of 3]
6 Leaders from the 1st Signal Brigade pose for a group photo during the Thanksgiving meal service at the Talon Cafe Warrior Restaurant on Camp Humphreys, Nov. 27, 2025. The Talon Cafe Warrior Restaurant held a Thanksgiving meal service to provide a holiday meal for the community. (U.S. Army photo by Pfc.
Ulchi Freedom Shield 2025: 1st Signal Brigade Mass Casualty Exercise
Video Player is loading. Current Time 0:00 Duration 0:00 Remaining Time -0:00 Beginning of dialog window. Escape will cancel and close the window. End of dialog window. video size: x Advanced Embed Example Add the following CSS to the header block of your HTML document. Then add the mark-up below to the body block of the same document. 6 U.S. Army Soldiers and emergency responders participate in a mass casualty exercise hosted by 1st Signal Brigade on Camp Humphreys, South Korea, Aug. 19, 2025.
Ulchi Freedom Shield 2025: 1st Signal Brigade Mass Casualty Exercise [Image 10 of 10]
6 U.S. Army Soldiers load simulated casualties onto a transport bus in preparation for evacuation during a mass casualty exercise at Camp Humphreys, South Korea, Aug. 19, 2025. The exercise is part of Ulchi Freedom Shield 25, an annual training event that enhances the combined defense posture and strengthens Republic of Korea-U.S. alliance response capabilities against a wide range of security threats.
Alpha Company, 304th ESB-E Provides Signal Support During Freedom Shield 2025 [Image 4 of 6]
6 U.S. Army Soldiers from Alpha Company, 304th Expeditionary Signal Battalion – Enhanced (ESB-E) establish vital signal support during Exercise Freedom Shield 2025 at Camp Humphreys, South Korea, on March 18, 2025. The unit ensures seamless communication capabilities, reinforcing operational readiness and interoperability in a dynamic environment. (U.S. Army Photo by Cpl.
Transition in dynamic events: The 2020 lightning complex fires in Northern California as an adaptive system
1 INTRODUCTION The increasing frequency, scale, and scope of large-scale, catastrophic events over the past three decades have underscored a long-standing, persistent problem in crisis management (NOAA, 2024). How can crisis managers scale their actions in response to threat from one level of operation to the next under dynamically changing conditions, while maintaining effective performance as a system? This question has drawn the attention of organizational theorists for decades.
1st Signal Korean workers overcome treacherous conditions to keep communications lines open during winter
Pictured from left to right at the Top Site of Camp Madison on December 12th, 2024, are Mr. Chang, Chung Chin, telecommunications specialist, Capt. Joshua Knight, U.S. Army Network Enterprise Center Seoul company commander, and Mr. Yoo, Chang Soo, electronics technician, who is also the Site Lead. (Photo by Sgt.
1st Signal Korean workers overcome treacherous conditions to keep communications lines open during winter [Image 11 of 11]
6 In August 2022, heavy rains caused a mountain collapse near Camp Madison, destroying a vital access road and disrupting operations. (Photo courtesy of Mr. Yoo, Chang Soo) Date Taken: 08.15.2022 Date Posted: 01.09.2025 23:00 Photo ID: 8825726 VIRIN: 220816-O-TQ984-6951 Resolution: 4032x2268 Size: 4.83 MB Location: CAMP HUMPHREYS, KR Web Views: 3 Downloads: 0 PUBLIC DOMAIN 1st Signal Korean workers overcome treacherous conditions to keep communications lines open during winter
1st Signal Korean workers overcome treacherous conditions to keep communications lines open during winter
6 As the first snow blanketed the Korean Peninsula, a dedicated team of Korean local nationals climbed the treacherous slopes of Gwanggyosan Mountain to maintain critical communications during heavy snowfalls from Nov. 26 to Dec. 10. “On the night of November 26th, I received a call from Mr. Chang, Chung Chin, telecommunications specialist, about a snowfall crisis at Camp Madison; heavy snowfall had begun blanketing the region, accumulating five inches by the following morning,” said Capt.
Interorganizational networks in dynamics of disaster: Comprehensive approach to network effectiveness
CONFLICT OF INTEREST STATEMENT I certify that I have NO affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers' bureaus; membership, employment, consultancies, stock ownership or other equity interest; and expert testimony or patent-licensing arrangements), or nonfinancial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or...
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