Invited participant, the Vatican’s Dicastery for Promoting Integral Human Development and Pax Christi International workshop, “Path of Nonviolence towards a Culture of Peace,” Rome, 4-5 April 2019.- University Committee on Global Strategy, University of St. Thomas, 2017-20.
- Organizer and moderator, “Just Peace / Nonviolence Workgroup.” Chicago. 24 August 2017.
- Commentator for Bearings Online, Collegeville Institute for Ecumenical and Cultural Research. 2017-.
- Catholic Nonviolence Initiative USA steering committee. 2016-2024.
- Strategic Planning Task Force on Global Connections, University of St. Thomas, 2015-2017.
- Invited participant, Pax Christi International / Pontifical Council for Justice and Peace conference, “Nonviolence and Just Peace: Contributing to the Catholic Understanding of and Commitment to Nonviolence,” Rome, 11-13 April 2016.
- Board of Directors, The Gilead Project, 2015-
- Advisory Board, Institute for Catholicism and Citizenship, University of St. Thomas, 2014-.
- Catholic Peacebuilding Network steering committee, 2013-.
- Advisory Board, Muslim-Christian Dialogue Center, University of St. Thomas, 2008-.
- Liaison Committee, Department of Catholic Studies, University of St. Thomas, 2012-.
- Faculty adviser, Catholic Relief Services Student Ambassadors, University of St. Thomas, 2014-15.
- Curriculum Committee, Theology Department, University of St. Thomas, 2011-12, Spring 2016.
- Theology Department Summer Workshop on “Teaching and the Teaching of Vatican II.” University of St. Thomas. 31 May – 3 June 2011.
- Ad hoc committee on clinical faculty, 2010-11.
- Faith and the Catholic Tradition Review Committee, University of St. Thomas, 2004-08.
- Master of Arts in Theology Program Committee, School of Divinity, University of St. Thomas, 2003-07.
- Executive Director, Bridgefolk movement for Catholic-Mennonite dialogue and grassroots unity, 2001-07.
- General editor, Bridgefolk Series, Pandora Press, 2004-.
- Invited participant, Forum on Catholic Traditions on Peace and War, Woodstock Theological Center at Georgetown University, sponsored with the US Jesuit Conference, 6 November 2003.
- Co-chair, steering committee of Bridgefolk movement for Catholic-Mennonite dialogue and grassroots unity, 2001-04.
- Lead organizer, Bridgefolk gathering on “Spiritual Practices for Violent Times: Catholics and Mennonites Bridging the Divide,” Saint John’s Abbey, 17-20 July 2003.
- Lead organizer, Bridgefolk gathering on “Creating Peacemaking Communities for the New Millennium: Catholics and Mennonites Bridging the Divide,” Saint John’s Abbey, 12-14 July 2002.
- Moderator and co-convener, Mennoonite-Catholic Theological Colloquium, 2000-.
- Member-at-large, Mennonite Central Committee Peace Committee, 2001-
- Convener, and member of planning and leadership group, for “Bridging Retreat” of Mennonites and Roman Catholics working to bridge their traditions, Laurelville (Pa.) Mennonite Church Center, 20-22 August 1999.
- Christian Education Committee, Indiana-Michigan Conference of the Mennonite Church, 1990-1996.
- Chair, Special Committee for Long-Term Planning, Kern Road Mennonite Church, South Bend, Ind., 1991-1993.
- Steering Committee of Fellowship of Reconciliation Task Force on Latin America and the Caribbean, 1987-89.
- Charter member of Servicio Paz y Justicia – Nicaragua (SERPAJ-Nic.), 1984-1985.