Metrolink Teams to Pilot Earthquake Early Warning System to Enhance Rail Safety
Metrolink Announces New Executive Leadership Team Appointments
The appointments follow Darren Kettle’s selection as CEO of the region’s passenger rail service in September 2021.

Metrolink is southern California's regional passenger rail service that connects people, communities, and businesses.
Photo: Metrolink
Metrolink CEO Darren Kettle announced the appointments of Don Filippi as COO and Arnold Hackett as CFO, and the addition of Paul Hubler as CSO.
The appointments follow Kettle’s selection as CEO of the region’s passenger rail service in September 2021.
“We have ambitious plans to transform Metrolink into the backbone of the region’s transportation system — one that enables people to connect to opportunity, family and fun across all six counties,” Kettle said. “Achieving our vision as we emerge from the pandemic will require a strong leadership team that brings both focus and innovation. We are thrilled with Don’s and Arnold’s vital contributions to the team from their previous interim roles and look forward to the fresh perspectives, ideas and connections that Paul will bring as he joins our dynamic team.”
As the interim Metrolink COO since February 2021, Filippi has led the operations team through the COVID-19 pandemic. Those challenges included ensuring the continuity of operations, implementing enhanced cleaning and sanitizing practices, and optimizing train schedules to meet the evolving needs of essential workers.
Filippi brings nearly 27 years of freight and passenger rail experience from both the public and private sectors, and a background in safety and operations. Before assuming the interim chief operations role, he was overseeing Metrolink’s safety, security, and compliance program since December 2018.
Filippi joined Metrolink in 2018 from the North County Transit District (NCTD), where he served as COO and CSO. Prior to NCTD, Filippi served for five years at the California Public Utilities Commission, rising to the position of superintendent, rail transit safety section, and 14 years with Union Pacific Railroad, where he served as a switchman, a locomotive engineer, and ultimately rose to a manager of operating practices.
Hackett joined the agency as a technology consultant in May 2019. He is credited with implementing process and policy enhancements that improved Metrolink’s financials and transparency. In May 2021, Hackett was selected by the Metrolink Board of Directors as its interim CEO following the departure of Stephanie Wiggins. When Kettle assumed the CEO position in September 2021, Hackett was tapped as interim CSO.
Hackett has more than 30 years of experience in the private technology industry at the Xerox Corporation where he served as VP and GM of Alliance and Partnership Management. He holds a Bachelor of Science from UCLA, a Master of Science in computer science from California State University, Long Beach, and an MBA from the University of Southern California.
Hubler will join Metrolink on Feb. 28 as the CSO, providing executive oversight and leadership for planning, government and community relations, sustainability initiatives and railroad services. Hubler has more than 25 years of experience in transportation policy and legislative and public affairs.
Prior to joining Metrolink, Hubler was the director of government and community relations for the San Gabriel Valley Council of Governments for 14 years, responsible for securing grant funding for the Alameda Corridor-East rail infrastructure construction program in Los Angeles County.
More Management

METRO Opens Submissions for 2026 Motorcoach Awards
Nominations are now being accepted for METRO Magazine’s Operator of the Year and Innovative Operator of the Year awards.
Read More →
New York MTA Advances Final Contract for Second Avenue Subway Expansion
Contract Four is the largest in the Second Avenue Subway Phase 2 project and includes construction of station infrastructure, tracks, and signals for the subway expansion, MTA officials said. Work on Contract Four will begin in 2027.
Read More →
Transit Agencies Highlight Safety Gains at National Summit
Leaders from 15 major transit systems shared crime-reduction results and safety initiatives while discussing the role of continued federal support.
Read More →
NITA Names New Leadership, Expands Reduced-Fare Program at First Board Meeting
The new regional transit authority appointed its first board chair and interim executive director while extending reduced fares across CTA, Metra, and Pace for eligible riders.
Read More →
Beyond the Checklist: A Structured Approach to Transit Maintenance
Reliability-Centered Maintenance helps transit agencies move beyond routine checklists to focus limited resources on the assets and failures that have the greatest impact on safety, reliability, and service.
Read More →
APTA 2026 Nominating Committee Selects Leadership Slate, Names Chair and Vice Chair Nominees
Leadership changes will help shape the association’s priorities and its representation of the transportation industry during the 2026–2027 term.
Read More →
DART Launches Major Security, Fare Enforcement Initiative
The 90-day demonstration will deploy coordinated security teams at five light rail stations while testing controlled access and gathering data to guide future investments.
Read More →Advancing Fare Collection Through Technology and Innovation
Learn about delivering 1300 gates at 91 stations while managing fare evasion. Explore the large scale deployment, solution customization and real-world results that affect the region. Prepare for deployment in your region now.
Read More →
Game Day in Motion: Moving Millions During the 2026 World Cup
Between packed transit stations and team motorcoaches, see how agencies and operators across North America tackled the transportation demands of the 2026 FIFA World Cup.
Read More →
Surface Transportation Extension Averts Shutdown, Leaves Transit Funding Gap
The stopgap keeps federal transportation programs moving, but missing advance funding could complicate the transit and rail projects agencies are planning next.
Read More →
