Dan Pierson

Senior Vice President

Mr. Pierson began diving for Global in 1992, working as a diver/tender, saturation diver, Dive Supervisor and Dive Superintendant before moving into management roles, first as Asset Manager, then Vice President of the Pacific Northwest Region. He was appointed Vice President of Operations in 2014, and is responsible for overseeing all of Global’s regional offices as well as corporate asset management. Mr. Pierson earned his commercial diving certificate from the Divers Institute of Technology in 1991 and honed his skills working in the Gulf of Mexico.  He grew up on the water and has been involved with recreational boating and diving all of his life, and it continues to be a passion of his today.  Mr. Pierson says although he never wanted to grow up and take an office job (“You miss one meeting and your future is planned for you…”), he feels very fortunate to have worked with so many incredible people over the years, both in the field and in the office. “Global has come a long way during my time here, and I’m excited to see where we take it next.”

Industry Associations:
Association of Diving Contractors, Inc., Board of Directors
International Marine Contractors Association
Divers Institute of Technology, Program Advisory Committee Member
The Beavers

Jennifer Jensen

VP of Human Resources

Ms. Jensen joined Global in 2013 and is the head of Human Resources (HR), Contracts, and Professional Development. She ensures these groups are responsive to the needs of our clients, our operations and our employees. Ms. Jensen holds a BA in Business Administration from Eastern Michigan University; she also holds SHRM-CP and PHR certifications. Prior to working at Global, she gained experience in the airline, higher education and retail industries, holding a number of management positions including Director of Human Resources.

Industry Associations:
Society for Human Resource Management
Association for Talent Development
The Risk Management Society
Lake Washington Human Resources Association
World At Work

Deirdre Coots

Vice President of Business Services

Deirdre was raised in Anchorage, Alaska, and attended the University of Alaska at Fairbanks. Her first glimpse of the commercial diving industry was in 1999 in Long Beach, California; she has been around the industry since. In 2007 Deirdre started her career in the commercial diving industry. She began working for Offshore Divers out of Anchorage, AK, supporting the company by providing technical writing support for platform inspections. Deirdre joined Global Diving & Salvage, Inc. in 2009 as Administrative Assistant when they acquired Offshore Divers; her passion for the industry flourished as she quickly learned about the business. In 2011, Deirdre was promoted to General Manager of the Alaska Region, which she served for 11 years. During her tenure as General Manager, she grew the Alaska region, achieving and sustaining significant growth. Deirdre currently serves as the company’s Vice President of Business Services, overseeing the company’s regional locations, including Alaska, Washington, California, Kentucky, and South Carolina, leading and managing the company’s service lines and ensuring the organization efficiently meets customer needs.


Deirdre acknowledges that she is terrified of heights and prefers to be close to the water, if not on it or in it; she says she would have loved to go to dive school.

Dirk deGroot

Director of Major Projects

Mr. deGroot, P.E., was hired as Director of Marine Construction in 2021, and is responsible for the operations, management, engineering support and growth of Global’s Marine Construction division. During his professional career he has worked for several marine construction companies, and previously worked for Global from 2014-2018 as a project engineer. Mr. deGroot holds a Professional Engineer license for Washington (metals/geotech) and California (metals).

Aaron Harrington

Aaron Harrington

Director of Casualty Response and PNW Business Manager

Mr. Harrington started at Global in 1997 working in the field as an Environmental Technician, then advancing to Remediation Manager and Environmental Operations Manager where he oversaw marine and upland remediation projects and emergency responses. In 2013 he became the PNW General Manager, where he was involved with the estimating, bidding, client maintenance and project management for the region. After a brief hiatus, Aaron returned as the Director of Casualty Response in 2021. In this role, he leads company-wide efforts for marine casualties, oil spills or natural disasters, providing support in all aspects of salvage, recovery and restoration efforts. In 2022 Aaron also took on the position of PNW Business Manager where he is responsible for the regional office’s overall leadership and operations. In his free time, Mr. Harrington enjoys the outdoors and trying to keep up with his kids on the mountain.

Industry Associations:
Spill Control Association of America
Propeller Club

Kendra Bulawa

Kendra Bulawa

Alaska Business Manager

Ms. Bulawa joined Global in 2016 and is the Business Manager for the Alaska Region. As the Alaska Business Manager, she is responsible for the regional office’s overall leadership, operations, and administrative details; to include quality, customer satisfaction, profitability, growth for projects within the region, and focused growth within our core strategic service lines.

During her tenure at Global, Ms. Bulawa previously held the titles of region’s Logistic Coordinator and most recently Junior Engineer. She holds a Bachelor of Science in Petroleum Engineering from Colorado School of Mines.

Fred Foster

California Business Manager

Mr. Foster has been involved in the commercial diving industry since 1990 after graduating from Divers Institute of Technology. He joined Global in 2007 during the acquisition of Inshore Divers where he had been working as a diver and diving supervisor since 1995. In 2019 became the Northern California Diving Operations Manager, a position he held until December of 2020 when he became the California Business Manager.

Ryan Cummings

Ryan Cummings

Asset Group Manager

Mr. Cummings has been involved in the commercial diving industry since 1996 when he graduated from Santa Barbara City College with a degree in Marine Technology. He started at Global in 2003 as a diver and ROV Pilot, working on many of the company’s high-profile ROV salvage and construction projects. In 2012, Mr. Cummings became Global’s Assets Group Manager, where he is responsible for the company-wide purchasing, maintenance and transportation of all the company’s assets. He manages all diving equipment, vessels, vehicles, tools and other equipment.

Business Development & Marketing

Madeline Rennie

Marketing Specialist

Frank Immel

Frank Immel

Business Development Account Executive

Major Projects

Lara Mayer

Estimating and Proposals Manager

Mack Mason

Mack Mason

Project Engineer

Ben Hertford

Project Engineer

Dive Operations

Logan Gaylord

Dive Operations Manager

Bernie Rosenberger

ROV Operations Manager

Bill Akan

Dive Operations Manager – SE Alaska

Jim Greene

Dive Operations Manager – Southern California

Marine Casualty

Colby Dwoskin

Salvage Specialist

Willie Hayward

Salvage Specialist

Kerry Walsh Project Manager

Kerry Walsh

Project Manager & Salvage Master

Kyle Watson

Salvage Master

Kristofer Lindberg

Salvage Master

Environmental Services

Thuan Ngo

Thuan Ngo

Environmental Operation Manager – Pacific Northwest