Reymundo "Tony" Chapa
TNTCX Director
Tribal Liaison 

Reymundo “Tony” Chapa joined the team in December 2024 as Director of the U.S. Army Corps of Engineers Tribal Nations Technical Center of Expertise, in the Albuquerque District office. His office provides the U.S. Army Corps of Engineers and other federal agencies with technical assistance and support related to tribal affairs.

Chapa most recently served as an Intergovernmental Personnel Act Appointee to the U.S. Air Force Nuclear Weapons Center, where he was Cultural Resources Team Lead for the U.S. Air Force Sentinel Project. In that role, Chapa oversaw implementation of the project’s Programmatic Agreement with 59 Federally Recognized Tribes, led ongoing consultation in support of the largest U.S. Air Force infrastructure project in modern history, and managed archaeological fieldwork that included intensive tribal partner participation across four states.

In 2020, he was appointed Executive Director of the Center for Environmental Management of Military Lands, a service organization of Colorado State University. In that role, Chapa had organizational oversight of 650 staff members providing environmental management, planning, and technical support to U.S. Department of Defense missions around the world.  

Chapa developed his experience over years, working with tribal communities as a cultural resources manager in the public and private environmental compliance sectors. He has served at installation- and command-level, including positions as Base Historic Preservation Officer for Edwards Air Force Base, Cultural Resources Subject Matter Specialist at the U.S. Air Force Civil Engineer Center, and as Cultural Resources Program Manager at the Air National Guard (ANG) Readiness Center. During his service with the ANG, Chapa was on the Secretary of Defense’s Historic Preservation Working Group, and he founded the ANG Tribal Relations Working Group.

Chapa is Treasurer of the Society for American Archaeology, Board Member of the Register of Professional Archaeologists and Archaeology Southwest, and Advisory Board Member of the UCLA Cotsen Institute Waystation Initiative and Terra Search MIA, a veteran-owned organization that supports the U.S. Government’s global efforts to locate, recover, and repatriate missing U.S. Service Personnel.

Chapa is an Army Combat Veteran who holds Master of Arts degrees in Political Science from Texas State University, and Anthropology from the University of Wisconsin. He is passionate about family, music, culture, international travel, art, archaeology, and long road trips in his 1982 VW Westfalia camper.

Brian A. Zettle
Senior Biologist/Tribal Liaison
Special Programs Manager

Brian currently serves as the Lead Biologist for the TNTCX. With a Bachelor’s degree in Biological Sciences from Clemson University and years of experience, Mr. Zettle brings a wealth of expertise to his multifaceted role, where he works closely with Tribes, engineers, and natural scientists across USACE to integrate Indigenous Traditional Ecological Knowledge (ITEK) and Nature Based Solutions into ecosystem restoration and climate change resiliency projects and studies.

In his previous roles, Mr. Zettle served as the Senior Biologist for the Coastal Resiliency Program in Mobile, Alabama, where he managed the Monitoring and Adaptive Management Plan for the Mississippi Coastal Improvements Program (MsCIP) Barrier Island restoration project and contributed significantly to coastal resiliency efforts. Prior to this, he was the Section Chief for the Inland Environment Team at the Mobile District, responsible for overseeing environmental compliance and ecosystem restoration initiatives, including serving as the USACE Mobile District Senior Inland Environmental Compliance manager for critical water management matters in the Apalachicola-Chattahoochee-Flint River Basins (ACF).

Throughout his career, Mr. Zettle has developed extensive knowledge and experience in Endangered Species consultation, aquatic ecosystem restoration, environmental compliance, and monitoring and adaptive management. With his dedication to conservation and his unique blend biocultural expertise and cross cultural communication skills, Mr. Zettle continues to make significant contributions to environmental stewardship and community engagement.

Brian resides in Mobile, Alabama and, in true biologist fashion, cannot get enough of the great outdoors - escaping for National Park road trips with his wife, two daughters, and two outdoor loving pups. We know any of his road trips will include an ample amount of outlaw country music, and, if he goes anywhere west, an excuse to stop along the way for those unbeatable Mississippi Delta tamales. Known for his eclectic taste, Brian embraces weird music and experiences, including the whimsical allure of pirate metal bands that transport him to far-off lands on the high seas.

Mark Gilfillan
TNTCX Project Manager
Tribal Liaison

Mark Gilfillan currently serves as Senior Tribal Liaison with the TNTCX. Mark holds a Bachelor's of Science in Environmental Restoration and Waste Management from Colorado Mesa University in addition to a Master of Jurisprudence in Federal Indian Law from the University of Tulsa College of Law. Mark is a member of the Sac and Fox Nation of Missouri in Kansas and Nebraska, with Iowa Tribal ancestry and has extensive experience working with his own Tribe as well as Tribes and agencies across the United States.

Mark started his career in 1985 with the US Department of Energy as an environmental scientist covering a wide range of contaminant migration issues. Since then, he has held various positions within the private sector and state of Kansas, focused on environmental stewardship, notably Brownfields and Resource Conservation and Recovery Act (RCRA) compliance. During his time with the Sac and Fox Nation, Mark held the position of Tribal Gaming Chairman, overseeing various responsibilities including research on Tribal reserved rights and treaty history, NAGPRA compliance, cultural history preservation, museum management, and language preservation efforts. He also delivered an extensive Economic Development Plan to the Sac and Fox Nation and completed a Sovereignty Plan for the tribe.

Within USACE, Mark has served as the Tribal Liaison with the Sacramento District in addition to Regulatory Project Manager with the South Pacific Division, bringing invaluable support to Tribes throughout the region, USACE Headquarters, the Office of the Assistant Secretary of the Army, and the wider Department of Defense through training initiatives and regulatory compliance. In addition, Mark has served as the TNTCX Tribal Liaison for the Army, focusing on reuniting students from the Carlisle Indian School with their families and Tribes.

Mark resides in Grand Junction, Colorado, with his wife and their four children, and is honored to have fostered two Tribal children from the Sac and Fox Nation under the provisions of the Indian Child Welfare Act. Mark's personal interests include his Tribal culture, language preservation, as well as outdoor activities such as rafting, skiing, biking, camping, hiking, hunting, and fishing.

Ann W. Strange
Geographer

Ann "Annie" Strange serves as a Geographer with the TNTCX. She holds a Bachelor's of Arts in Geography from the University of Mary Washington in Fredericksburg, Virginia and a Master's of Science in Geography with a focus on water resources and water quality from the University of Tennessee in Knoxville. During her academic journey, she served as a National Science foundation GK-12 fellow, bringing STEM education to rural middle school students in East Tennessee and conducting her own research on the relationships between suspended sediments and the transportation of E. coli in rural streams. Her dedication and keen eye for detail earned her the Outstanding Fieldwork award for her research.

Annie's experience continued with the USACE Mobile District where she specialized in floodplain mapping, modeling, and analysis across several districts. Here responsibilities included managing local and regional data, reconciling geodatabases, and mapping channel data. She also played a crucial role in developing a real-time transportation map for the US Department of Transportation and introduced training initiatives for ArcGIS Online and ESRI Storymaps to regional offices. Additionally, Annie led the development of a geospatial tool and web-based map for district archaeologists to monitor water levels at sensitive cultural sites, a resource still used by the TNTCX today.

With her specializations in combining cultural and geospatial data, Annie manages the TNTCX's geospatial analysis, data management, digital mapping, and web services. She plays a crucial role in the management of data related to historic Tribal treaty and trust lands, development of project- and program-specific Storymaps, and adapting geocultural data to meet the needs of Tribal and agency partners.

Annie resides on the Gulf Coast of Mississippi with her husband, two kids, fluffy cat, and a goldendoodle that resembles a chicken nugget. Her hobbies include indulging in her daughter's Taylor Swift obsession, boating on the bayous, escaping to the mountains every chance she can, and staying active with a passion for playing tennis.

Chris Parrish
Archaeologist

Mr. Chris Parrish is an archaeologist embedded within the Operations Division of the Albuquerque District (SPA-OD). In this role, Chris provides technical expertise regarding compliance with Sections 106 and 110 of the National Historic Preservation Act (NHPA) and other applicable regulations, policies, and guidance. He also conducts fieldwork and prepares technical reports in support of consultation with State and Tribal Historic Preservation Offices and other stakeholders/consulting parties. Chris is SPA-OD’s designated lead for compliance with the Native American Graves Protection and Repatriation Act and the regionalization effort being conducted by the Mandatory Center of Expertise for Curation and Management of Archaeological Collections.  

Prior to his current position, Chris spent 12 years within the Regulatory Program as a project manager and subject-matter expert (SME), regional technical specialist (RTS), and Branch Chief. As an RTS for the South Pacific Division, he provided SME support regarding compliance with the NHPA and other applicable federal regulations, Executive Orders (EO) 13175 and 13007, and tribal consultation policies and guidance. High-profile permit application reviews supported while in this position include the Rosemont Copper Mine and Copper World projects, the Border Wall, and Pebble Mine (POA). Chris was also an instructor for the Regulatory IIA course, covering the topic of Tribal issues and consultation.

Chris joined the TNTCX in 2023, bringing his background in anthropology/archaeology and extensive experience in compliance with various environmental laws in addition to the NHPA, including the National Environmental Policy Act, Clean Water Act, Rivers and Harbors Act, and the Endangered Species Act. He has also spent over 25 years working with Tribes across the nation in various capacities. While in graduate school at the University of Montana, Chris focused his studies on Tribal issues and cross-cultural communication.

Chris lives in the Manzano Mountains southeast of Albuquerque with his artist wife, April, and the following four-leggeds: Prince (day-dreamy American Quarter Horse), Marlee (feisty American Quarter Horse), Maggie (curious healer-mix), Olo (vigilant Schipperke [pronounced Skipper Key]), and Scuffy (Zen-Master poodle-mix [aka Flying Foo Dog]). Originally from Colorado, he likes to spend his free time following the Broncos (NFL) and Avalanche (NHL) and talking about sports with his family and friends.