Park Rangers

Staff Counsel; FOIA Manager

Prior to joining PEER, Colleen was an Assistant District Attorney for the Suffolk County District Attorney’s Office in New York. She has also worked, clerked, and interned for multiple government agencies and non-profits, including the United States Department of Justice, the Office of the New York State Attorney General, the Natural Resources Defense Council, and Defenders of Wildlife. Colleen also volunteered as a Park Interpreter with the National Park Service at Theodore Roosevelt Island in Washington, DC. Colleen received her law degree from Georgetown University Law Center, where she was the Vice President of the Environmental Law Society and Senior Notes Editor for the Georgetown Journal of Gender and the Law. She received her bachelor’s degree summa cum laude in International Affairs from The George Washington University’s Elliott School of International Affairs. Colleen enjoys backpacking and camping trips, playing board games, and reading mystery novels.

COMMENTARY | Shutdown Could Provide Glimpse into the Future of Public Lands

by Kaylee Rodriguez | October 9, 2025
The Department of Interior is gearing up to slash its workforce, and as past shutdowns indicate, this means danger ahead for our parks and public lands ...

COMMENTARY | New Wave of Personnel Actions Threatens National Parks

by Kaylee Rodriguez | August 7, 2025
With peak visitation season underway, the National Park Service is struggling to keep up amid increasing uncertainty and understaffing ...

COMMENTARY | Public Lands Unprotected: The Impact of Department of the Interior Law Enforcement Firings

by Guest Contributor | April 11, 2025
With understaffing of law enforcement officers and rangers already a severe problem, the new wave of terminations is exacerbating under-enforcement into crisis status ...

Letter to NPS Acting Director Jessica Bowron – NPS employees return to work

by PEER | March 13, 2025
Letter to National Park Service Acting Director Jessica Bowron regarding the return to work for the illegally fired NPS employees ...

COMMENTARY | May Federal Employees Be Activists?

by Colleen Zimmerman | March 4, 2025
PEER is engaged in precedent-setting work to secure the rights of federal employees to publish and be active in civic organizations on their own time ...
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