Leadership Profiles
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John F. Clark

President and Chief Executive Officer

John F. Clark is president and CEO of the National Center for Missing & Exploited Children, the nation’s leading nonprofit organization on the forefront of child protection for more 36 years.

Since 1984, NCMEC’s mission has been to help find missing children, reduce child sexual exploitation and prevent child victimization. The organization has helped law enforcement recover more than 311,000 missing kids, distributed billions of missing posters, operated a 24/7 missing children hotline, offered comfort to countless families and trained and provided free resources to law-enforcement and other professionals across the country.

Clark has served as NCMEC’s leader for four years. He has extensive law-enforcement background, including 28 years with the United States Marshals Service. Before joining NCMEC, Clark was director of security at Lockheed Martin Corp., the nation’s largest defense contractor.

As CEO, Clark oversees a staff of nearly 350 employees and offices in four states, including Virginia, New York, Florida and Texas. In December 2018, Clark ushered in a new era for NCMEC as the organization moved to its new headquarters in Alexandria, Virginia.

For 22 years, NCMEC has operated the CyberTipline, a centralized mechanism for reporting child sexual exploitation. During his tenure at NCMEC, Clark has seen an exponential rise in these reports, with more than 35 million reports made to the CyberTipline in the last two years alone.

Throughout his career, Clark has been a leading child advocate. During his tenure at USMS, Clark implemented and administered Title I of the Adam Walsh Child Safety and Protection Act, which directed USMS to locate and apprehend fugitive sex offenders. He also oversaw the implementation and operation of the National Sex Offender Targeting Center.

Clark was appointed director of the USMS in 2006 by then-President George W. Bush as its ninth director, a post he held for five years. Before joining the USMS, Clark worked for the U.S. Capitol Police and U.S. Border Patrol. He earned a Bachelor’s of Science Degree from Syracuse University.

Michelle C. DeLaune

Senior Vice President, Chief Operating Officer

Michelle Collins DeLaune is the Senior Vice President, Chief Operating Officer, of the National Center for Missing & Exploited Children.

Since 1984, NCMEC has operated under U.S. Congressional authority to serve as the national resource center and clearinghouse on missing and exploited children. As COO of NCMEC, Ms. DeLaune oversees the center's federal grant awards, including the primary grant awarded by the U.S. Department of Justice's Office of Juvenile Justice and Delinquency Prevention. These grants help fund the organization's most critical work: its mission of bringing missing children home, stopping child sexual exploitation and assisting law enforcement. In addition, she is responsible for operational matters pertaining to NCMEC services provided to families, child-serving professionals and law enforcement.

During her 21-year career at NCMEC, she was responsible for establishing NCMEC's extensive program of work and policies responding to the explosion of online child sexual exploitation. Under her leadership, the CyberTipline has received more than 50 million reports regarding the sexual exploitation of children and currently makes critical information available to more than 120 countries around the globe. Ms. DeLaune was instrumental in the development of multiple voluntary industry initiatives aimed at reducing the amount of online child sexual abuse material.

To help ensure a victim-centric approach to digital crimes, Ms. DeLaune created the first-ever Child Victim Identification Program to assist with the identification and rescue of child victims depicted in sexually abusive images and videos. As the globally regarded premier victim identification program, NCMEC has dramatically increased the number of identified children victims to more than 18,000 children.

On multiple occasions, Ms. DeLaune has testified before the U.S. Congress about matters pertaining to the sexual exploitation of children. She has written several articles regarding the importance of identifying child victims depicted in sexually abusive material. She received a B.A. with a major in psychology from George Mason University and an M.A. in Criminology from the University of Maryland at College Park.

Paul J. Beriault

Chief Financial Officer

Paul joined NCMEC in September 2017, bringing his 25 year experience as a CPA leading financial teams to minimize costs, increase revenue, achieve transparency and compliance, and improve performance and efficiencies at non-profit organizations.

Early in Paul’s career, he was in public accounting and founding Principal of a CPA firm specializing in audits and tax preparation for non-profit organizations.  Paul then served as the Grants Administrator and Controller at the International Association of Chiefs of Police. He then served as the CFO for the Metropolitan Washington Council of Governments, and most recently, the International Republican Institute.

Paul has also served as a volunteer on the Board of Directors at the National PTA.

Paul holds a B.S. in Business Administration from California State University at Long Beach and is a member of the American Institute of Certified Public Accountants. Paul has lived in the Washington metropolitan area for the past 26 years and lives in Arlington, Virginia with his spouse and two young children. He enjoys skiing, outdoor activities and spending time with his family. Paul was inspired by the mission at NCMEC and excited to be part of team.

Yiota G. Souras

Senior Vice President, General Counsel

Yiota Souras joined NCMEC in 2006 after seven years of experience with corporate litigation and white-collar investigations at international law firms in New York and Washington, D.C.

Ms. Souras is responsible for all legal affairs of NCMEC including oversight of contractual, litigation, compliance, governance and intellectual property matters. She also advises NCMEC's President and CEO and staff members about legal issues pertaining to NCMEC's mission, provides counsel to the Board of Directors and serves as assistant corporate secretary to the Board.

Ms. Souras received a Juris Doctor from Fordham University and a Bachelor of Arts from The Johns Hopkins University.

John Shehan

Vice President, Exploited Children Division

John Shehan joined the National Center for Missing & Exploited Children® in February 2000. He is responsible for NCMEC's operations relating to sexual crimes committed against children, including online child pornography, enticement and other instances of child sexual exploitation. In this role, he also conducts interviews with the news media about issues relating to internet-facilitated crimes committed against children; testifies on behalf of NCMEC; and provides training and information sessions for the public, private industry, other nonprofit organizations and law enforcement agencies. 

He served as president of the INHOPE Foundation between 2012 and 2014 where he helped cultivate and develop hotlines in Central and South America and the Asian Pacific. He also served as vice president of the INHOPE Association between 2012 and 2016 and in 2018.

He served as a technical advisory board member to the Internet Safety Technical Taskforce, led by the Berkman Center for Internet & Society at Harvard University and was appointed to the Online Safety Technology Working Group.

Mr. Shehan received his Bachelor of Science with a major in criminal justice from Radford University in 1999, received an Executive Leadership Certificate from Cornell University in 2018, and currently serves as an advisory board member to the College of Humanities & Behavioral Sciences at Radford University.

Gavin Portnoy

Vice President, Strategic Advancement & Partnerships

As vice president of NCMEC’s Strategic Advancement & Partnerships division, Gavin Portnoy is responsible for creating and maintaining strategies to elevate the organization’s brand, create new partnerships, bolster existing relationships and work positively and efficiently with NCMEC’s departments and stakeholders to support programs and goals.

Portnoy joined NCMEC in 2014 after more than 15 years helping organizations build brand awareness and effectively tell their story using the latest business, digital, social and media channels. He has created groundbreaking television, marketing and content development projects for a number of top media outlets including Discovery, Fox, Lifetime, National Geographic, Ovation and PBS.

Portnoy previously oversaw NCMEC’s digital media team where he exponentially increased the organization’s social media reach and oversaw the formation of high-profile content. He launched a successful suite of new digital and social initiatives, raising national awareness of NCMEC. He was honored in 2015 as one of PR Week’s “40 Under 40” for developing new strategies to directly assist with the recovery of missing children.

Portnoy received his Bachelor of Arts degree in Communications from Rowan University in 2003.

Staca Shehan

Vice President, Analytical Services Division

Staca Shehan joined the National Center for Missing & Exploited Children (NCMEC) in 1999 and is the vice president of the Analytical Services Division. She is responsible for policy decisions and overall operations within the division, including oversight of the Child Sex Trafficking Team and Sex Offender Tracking Team.  In this role, she helps create and manage the division’s budget; conducts interviews about issues relating to child sex trafficking, noncompliant registered sex offenders, internet crimes against children and attempted abductions of children; and provides training sessions to the public, private industry, other nonprofits and law enforcement agencies.

In 2011, Ms. Shehan spearheaded the creation of the Child Sex Trafficking Team at NCMEC to respond to the increased need for technical assistance and analysis in child sex trafficking cases. This dedicated team provides support to law enforcement agencies who are working to identify and recover children victimized through sex trafficking and successfully prosecute those involved in trafficking children. These unique resources include analysis of potential suspects and child sex trafficking victims/potential victims.

In 2017, Ms. Shehan was selected as one of 21 representative members on the National Advisory Committee on Sex Trafficking of Children and Youth in the United States. The Committee advises the Secretary of the U.S. Department of Health and Human Services and the Attorney General on policies improving the nation’s response to the sex trafficking of children and youth in the United States.  She has also written several articles on behalf of NCMEC regarding child sex trafficking and children missing from care. Such publications were featured in the ‘United States Attorneys' USA Bulletin, Vol. 65, No. 6’ and by the OJP Diagnostic Center.

During her career at NCMEC, Ms. Shehan also developed and implemented the Sex Offender Tracking Team. The team created procedures and protocols used by analysts to provide technical assistance to law enforcement in their efforts to locate noncompliant sex offenders. During this process, she worked closely with NCMEC programmers to outline the creation of the Sex Offender Case Management system. This system allows analysts to track offenders and compare their geographic locations to open and unsolved child abductions, attempted abductions and incidents of child sexual exploitation.

Ms. Shehan holds a Bachelor of Arts in Psychology from La Salle University with a minor in Criminal Justice and Certificates in Executive Leadership and High-Performance Leadership from Cornell University.

Dr. John E. Bischoff III

Vice President, Missing Children's Division

Dr. John E. Bischoff III is the vice president for the Missing Children Division at NCMEC.  Within this role, he is responsible for the oversight of all missing children’s cases, both in the U.S. and those children taken abroad. He is responsible for all case management and hotline operations (1-800-THE-LOST®), with locations across five regionally based offices.   

Prior to NCMEC, Dr. Bischoff was a Mass Care (ESF#6) program specialist with the Federal Emergency Management Agency (FEMA) in Washington, D.C. In this capacity, he was responsible for coordinating with federal, state and local governments and private sector partners to develop effective family evacuation and reentry plans, strategies and policies. He also coordinated post-disaster child reunification plans, as well as oversaw the development of the National Emergency Mass Evacuation Tracking System. 

Prior to FEMA, Dr. Bischoff was the technical director of Public Safety and Criminal Investigations for AOL located in Dulles, Virginia.  During his 13 years at AOL, Dr. Bischoff was directly involved with hundreds of federal, state and local law enforcement investigations involving child sexual exploitation and financial fraud. He was considered an expert by federal, state and local courts regarding AOL networks, email platforms and data transfer technologies. 

Dr. Bischoff holds a Doctorate in Engineering, with a focus on Engineering Management, from the George Washington University. He has received a Master of Business Administration, a Graduate Certificate in Management of Information Systems and a Bachelor’s in Business Management from Shenandoah University in Winchester, Virginia.