WE ARE FORESTERS LEADING INNOVATION

DATA-DRIVEN NATURAL RESOURCE MANAGEMENT

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Our team of professionals have agency and private industry experience. With this knowledge and background, F4 Tech understands the obstacles, goals, processes and technology involved in all aspects of natural resource management.
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We help keep forestry viable • We innovate • We help foresters work more efficiently 
We are dedicated to long-term relationships • We always follow through
We are committed to customer service

TRUST THE F4 TEAM

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EXPERTS IN OUR FIELD

Professional foresters, ecologists, wildlife biologists, and analysts with decades of experience in all aspects of natural resource management.

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TAILORED TO YOUR NEEDS

We understand our client’s specific land management goals and objectives and provide superior customer service for exceptional outcomes

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RELEVANT DATA & REPORTING

Our inventory tracking system includes an audit function,  near real-time (next day) statistics, and ready-access to collected
data and summaries.

Our staff of 15 professionals have earned degrees (BS, MS, MBA, PhD) from 15 different universities/colleges and on average have over 20 years of professional experience pertinent to F4 Tech’s core business and service lines.

STAFF BIOS

BRIAN COBBLE | PROJECT FORESTER

Brian joined F4 Tech as a Project Forester in January 2016. His professional forestry experience includes over 19 years as a field forester and project manager helping hundreds of forestland owners (non-industrial, state, non-profit, and industrial) in the southeastern United States manage and conserve their forest resources. Brian is highly experienced and skilled in several areas of silviculture, timber sale administration, prescribed burning, reforestation, site preparation, herbicide applications to control invasive/exotic plant species, and contractor oversight related to field-based projects. Prior to joining F4 Tech, he worked for the Florida Forest Service for 14 years as a County Forester. Brian has been a Florida Certified Prescribed Burner since 2008 and has a B.S. in Forest Management from Mississippi State University.

JOHN COTHRUN | FOREST ANALYST

John joined F4 Tech in July 2009 and is a professional forester with 17 years of experience. He is proficient in using a variety of analytical software packages and languages; proposing, designing, and implementing forest inventory projects; analyzing and interpreting large datasets; providing client support on forest inventory data needs; interpreting and processing remotely sensed data including LiDAR and aerial photos for land cover analysis; designing and maintaining dashboard websites and Structured Querying Language (SQL) databases; providing technical training for clients; producing summary reports; and conducting forest growth and yield projections and timber harvest schedules. He has managed, created, and evaluated GIS datasets and geoprocessing tools in Esri ArcMap, ERDAS Imagine.  John has prior experience in fire suppression and prevention (U.S. Forest Service - wildlands fire; four years) and timber inventory and management (Collins Pine Company; one year) in Arizona, New Mexico, Nevada, Montana, Idaho and California. John has a B.S. and Master’s in Forestry from Northern Arizona University and is currently a Ph.D. candidate at Florida State University (geography).

 

RICK DAVIS | VICE-PRESIDENT

Rick joined F4 Tech in 1999 and has over 27 years of forestry experience mainly in the Southeast U.S.  He oversees the financial operations of the company, manages all field projects, leads F4 Tech’s experienced team of field foresters, and is responsible for scoping, vetting, and implementing various field projects (many involving subcontractors): forest inventory, timber sales, site preparation, tree planting, prescribed burning, herbicide treatments to control invasive/exotic plants, and timber salvage related to forest pest outbreaks and hurricane damage. Prior to joining F4 Tech, Rick was a procurement forester/manager for T & S Hardwoods, Inc. in Georgia (five years).  He is a Certified Forester (Society of American Foresters), a full member of the Association of Consulting Foresters, a registered forester in Georgia and North Carolina, a licensed forester in Mississippi, and a Florida Certified Prescribed Burner. Rick has a B.S. in Forest Resources from the University of Georgia and an MBA from Florida State University.

 

JESSICA FREY | NATURAL RESOURCE TECHNICIAN

Jessie joined F4 Tech in January 2018 and has 15 years of experience in natural resource management on public lands. She provides direct field support for a variety of projects including woody debris clean-up, road and fire line clearing, fence and culvert installations, contractor oversight, herbicide application oversight, hurricane damage cleanup, and prescribed burning. Prior to joining F4 Tech, Jessie worked for the Florida Park Service where she supported land management projects and served on the regional prescribed fire team. Jessie has been a Florida Certified Prescribed Burner since 2014 and has completed the Florida Division of Cultural and Historical Resources Archeological Resource Monitoring (ARM) training achieving ARM Certification. She has a B.S. in Animal Sciences from Auburn University.

 

FRED HAINES | SENIOR FOREST ANALYST

Fred joined F4 Tech in August 2015 and has 45 years of professional experience in all aspects of forestry as practiced across the southern United States. At F4 Tech, he evaluates forest inventory procedures to confirm the consistency of sampling methods, data collection, data quality control measures, and data analyses per specifications and objectives for several public and private clients. Fred has also helped develop a multi-level forest sampling protocol (overstory, midstory, understory, and ground cover conditions), co-developed an objectively-based ecosystem condition scoring process, and reviewed forest inventory data to inform development of overstory treatment prescriptions. He has extensive experience in proposing, developing, and implementing forest inventory systems, sustainable forestry programs, and special projects focused on analysis and interpretation of detailed forest resources data. Fred has prepared and administered numerous multi-million dollar operations budgets for large industrial forestland owners concerning timber harvesting, site preparation, forest regeneration, and road/property maintenance. He has developed economic modeling systems, conducted forest growth projections, and conducted numerous long-term planning scenarios to evaluate timber volumes and associated cash flows across multi-million acre ownerships. Prior to joining F4 Tech, Fred worked for International Paper (31 years) in various roles (Manager - Gulf Coast Forest Management Area, Manager – Southlands Forest, Forest Systems Specialist) and the St. Joe Company (8 years) as Manager – Forestry and Harvest Planner.  He is a Certified Forester (Society of American Foresters). Fred has a B.S. in Forestry from the University of Florida.

 

CRAIG HEDMAN | SENIOR PROJECT MANAGER

Craig joined F4 Tech in August 2015 and has over 34 years of experience in natural resources conservation and management emphasizing forest, wetland, wildlife, and water resources. Craig helps manage large-scale and long-term client projects that involve long-term planning, habitat scoring and modeling, and sustainable forest resource management.  He also works closely with F4 Tech Forest Analysts regarding vegetation data analysis, habitat and forest predictive modeling, and reporting. Over his career, he has served as a practitioner, manager, and researcher; proposed, developed, and implemented short-term and multi-year projects regarding sustainable forestry, ecological and habitat assessments (large-scale and stand-based), and protected species surveys/management; conducted forest ecological research; authored and co-authored numerous natural resource-based technical documents and refereed-journal articles; secured environmental permits; and helped develop and manage mitigation/conservation banks. His work experience includes 13 years as manager of forest ecology and water resources for International Paper, over 10 years as an ecological/environmental consultant (southeast U.S.), and three plus years as a forester and watershed manager for the Providence (RI) Water Supply Board. He is a Certified Forester (Society of American Foresters), a Certified Senior Ecologist (Ecological Society of America), and a Courtesy Assistant Professor at the University of Florida - School of Forest, Fisheries, & Geomatic Sciences. Craig has a B.S. in Natural Resources Management from the University of Rhode Island, a Masters in Forest Productivity from Duke University, and a Ph.D. in Forest Resources from Clemson University. 

 

CLINTON MCCOMB | TECHNICAL MANAGER

Clinton joined F4 Tech in April 2018 and is a degreed professional with over 11 years of experience supporting GIS and forest management projects. He has the knowledge and ability to review GIS and forest inventory work conducted by others, analyze spatial and tabular data, develop forest inventory reports and statistics, and interact with clients on project needs and deliverables. Clinton is proficient in multiple Microsoft Office Applications to include SharePoint and SQL Server Management Studio, forest inventory software (SilvAssist Suite, TwoDog), and Esri ArcGIS software products, and routinely provides technical support regarding hardware/software for forest inventory data collection projects. Prior to joining F4 Tech, Clinton was a GIS/Technical Manager for a private forestry consultant in Tallahassee, Florida (Land and Timber Management, Inc.) supporting large private landowners in the southeast (timber sales, reforestation, and wildlife habitat management).  He also served as a part-time GIS Analyst at FSU in the Florida Resources and Environmental Analysis Center. He has a B.A in Geography and Environmental Studies from Florida State University.

 

MARK MILLIGAN | PRESIDENT

Mark founded F4 Tech (formerly LandMark Systems) in 1998 and has over 33 years of experience in the field of forestry and natural resources management. He provides overall organizational leadership, leads business development, develops technical reports, and presents technical information at meetings and conferences. Since the company’s inception, he has driven technological advancements – several of which culminated in U.S. patents supporting the F4 Tech SilvAssist Suite of software. Mark actively serves on several professional boards and engages with other organizations sharing similar goals and objectives such as the Society of American Foresters, Florida Forestry Association, and the Association of Consulting Foresters. Prior to forming F4 Tech, Mark worked for the Florida Forest Service (10 years) as a County/State Lands Forester and State Lands Management Coordinator. He is a full member of the Association of Consulting Foresters and was inducted into the Florida Forestry Hall of Fame in 2020. Mark has a B.S. in Forest Management from Louisiana State University and an MBA from Florida State University.

 

MARSHALL HILTON | SENIOR PROJECT FORESTER

Marshall joined F4 Tech in January 2021 and has approximately six years of experience as a field forester and project manager. Since joining F4 Tech, he has focused on forest inventory project development, project scoping, forest operations management (timber marking, timber sale administration, timber salvage, planting, site preparation, and prescribed burning), GIS mapping, and database management. Marshall has several years of experience in the forest industry and worked in Mississippi and Alabama in timber procurement and procurement analytics.  Marshall also worked for two of the largest private landowners in the State of Florida and spent three years managing over 15 thousand acres of eucalyptus plantations (one of the largest such plantations in North America).  He is a Florida Certified Prescribed Burner and has a B.S. in Forest Resource Management and a Masters of Forest Resources and Conservation from the University of Florida. 

 

HARRISON PETERSON | SENIOR PROJECT FORESTER

Harrison joined F4 Tech in 2002 and has over 23 years of experience as a field forester and project manager. Harrison has extensive experience supervising large-scale forest inventory projects across the southeast U.S. for private and government landowners, e.g., Department of Defense. He is experienced in GIS mapping, database management, and routinely manages and administers timber sales, site preparation, tree planting, timber marking, timber salvage, prescribed burning, hurricane cleanup, and habitat restoration operations. He is highly experienced and skilled at managing contractors engaged in field-based projects and auditing timber inventory fieldwork. Prior to working at F4 Tech, Harrison was employed by the Florida Forest Service as a State Lands and County Forester (four years).  He has a B.S. in Forestry from Southern Illinois University in Carbondale.

 

SARA RESSLER | OFFICE MANAGER

Sara joined F4Tech in April 2012 and has over 20 years of experience supporting the day-to-day operations of small companies. Her responsibilities at F4 Tech encompass many aspects of our business operations such as record keeping, invoicing, budget updates, payroll, project tracking, project reporting, contracting, staff scheduling, bookkeeping, and contractor/client communications. 

 

SAM RITTER | FIELD FORESTER

Sam began his professional career in forestry when he joined F4 tech in August 2015.  He supports F4 Tech staff on timber inventory, data collection, and forest/land management field projects (timber sales, timber salvage, habitat restoration, hurricane damage cleanup). Sam also oversees subcontractor field work and has served as the primary field auditor for multiple forest inventory projects conducted in Florida and Georgia. He has an A.A.S. degree from Southwest Georgia Technical College where he specialized in Land, Forest, and Wildlife Management.

 

BRIAN STIBER | DIRECTOR OF CONSULTING

Brian joined F4 Tech in June 2008 and has over 24 years of experience focused on forest inventory process management, database management, growth and yield modeling, and harvest scheduling. He is experienced in software planning, design, and coding; implementing field data collections using mobile, desktop, and web platforms; and GIS/GPS technologies that directly support natural resource management. He also oversees and manages the work of software developers and day-to-day operations related to Structured Querying Language (SQL) databases, data security, and the SilvAssist Suite of programs; designs and maintains dashboard websites; and provides technical training for clients. Brian also has several years of field experience in natural resources management/forestry which underpins his support of clients in solving problems, updating technical processes, and improving product lines. Prior to joining F4 Tech, Brian served as the president of Stiber Forestry (three years), was a procurement forester for Kuhn’s Brothers Lumber in Pennsylvania (six years), and worked for Georgia Pacific/The Timber Company in Virginia as a silviculturist/forester (two years). Brian has a B.S. in Environmental Resource Management/Forest Science from the Pennsylvania State University.

 

BIJAY TAMANG | PROJECT FORESTER/ANALYST

Bijay joined F4 Tech in April 2016 and is a professional forester with 17 years of experience focused on forest and wildlife conservation and management. In his role at F4 Tech, Bijay prepares forest inventory deliverables; supports forest inventory processes and data QA/QC; analyzes, interprets, manages, and summarizes forest inventory data; prepares reports; supports GIS applications, and forest inventory planning and deployment; and conducts forest growth and yield modeling. He is proficient in the use of the Remsoft Woodstock package, ArcGIS, and statistical packages (SAS and R). Through prior work as a project leader for Arborgen (six years), a post-doc at the University of Florida (one year), and an university research assistant in Nepal (five years), Bijay has gained experience working on phosphate-mine restoration projects using fast-growing trees, woody biomass/bioenergy projects, short rotation woody crops and tree improvement; proposed, designed, and implemented forest ecological, tree improvement, and wildlife research projects; analyzed and interpreted vegetation data; collaborated with multiple university research teams; and published findings in refereed scientific journals. He is a member of the Society of American Foresters and a volunteer reviewer of manuscripts submitted to multiple scientific journals: Ecological Engineering, Tropical Conservation Science, Agroforestry Systems, and the Turkish Journal of Agriculture and Forestry, Energy and Fuels, and Bioenergy Research. Bijay has a B.Sc. in Biology and an M.Sc. in Biology/Ecology from Tribhuvan University (Nepal), and an M.S. and Ph.D. in Forest Resources and Conservation from the University of Florida.

 

JEFF VOWELL | SENIOR PROGRAM MANAGER

Jeff joined F4 Tech in October 2018 and has over 42 years of experience in forest management emphasizing forest, wetlands, wildlife, and water resources.  Jeff provides on-the-ground support for field projects as it concerns watershed area determinations and hydrologic management, e.g., water bar placement, culvert installation, and low water crossing design and construction. He started his career as a procurement forester for the forest products industry in southwest Arkansas. Prior to joining F4 Tech, Jeff worked for the Florida Forest Service (FFS) where he served as the Forest Hydrologist and later the Assistant Director. During his 31-year career with the FFS, he supervised four Bureau Chiefs (Forest Protection, Forest Management, Forest Logistics and Support, and Field Operations) who managed agency operations and land management on 1.2 million acres across 35 State Forests. Jeff also directed all field operations related to fire prevention, detection, and suppression. In addition, he managed the FFS forest hydrology program regarding Florida’s silviculture best management practices (BMP), conducted statewide BMP compliance and effectiveness monitoring; led the revision of the “Florida’s Silviculture Best Management Practices Manual”; coordinated development of regional BMP monitoring guidelines and a regional BMP program review process for the Southern Group of State Foresters; published the first Wildlife BMP Manual in the southeast (“Florida Forestry Wildlife Best Management Practices for State Imperiled Species”); developed and coordinated forest/water quality research; and authored or co-authored numerous natural resource-based technical documents and refereed publications. Jeff has a B.S. in Forest Management and a M.S. in forest hydrology from Oklahoma State University.

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ASSOCIATIONS AND AFFILIATIONS

F4 Tech staff are plugged in and stay apprised of business developments and improvements through active participation in multiple organizations and associations.

Society of American Foresters  •  The Nature Conservancy  •  Association of Consulting Foresters

The American Chestnut Foundation  •  Ecological Society of America  •  Society for Conservation GIS  Esri Business Partner  •  National Wild Turkey Federation  •  Florida Forestry Association