Ken Senser, Senior Vice President of Global Security, Aviation, and Travel (GSAT) for Walmart, has announced his retirement. Brian Murphy has been named Vice President of Global Security and Aviation, effective March 2019.

During his 15-year-tenure with Walmart, Senser established an integrated, risk-based program to protect Walmart’s people and assets. He led the development and implementation of the company's emergency management and response processes and the creation of Walmart’s Emergency Operations Center (EOC). He has also led the response to a diverse array of crises, including natural disasters, such as Hurricane Katrina. According to the company, "Senser set the foundation for the current investigative program and led the development of governance for our aviation and travel programs."

Senser joined Walmart in September 2003 as Vice President of Global Security. Over time, his responsibilities expanded to include Aviation and Travel, leading to his promotion to Senior Vice President. Prior to joining Walmart, Senser worked 20 years at the Central Intelligence Agency (CIA) and served on a detail assignment as the first Assistant Director of the FBI for Security following the arrest of Robert Hanssen for espionage.

The company also announced that Brian Murphy has been named Vice President of Global Security and Aviation, effective March 2019. Murphy joined Walmart in August 2017 as Vice President for Global Security. Previously, Murphy worked for the CIA for more than 28 years. He served primarily in the Middle East, Europe, and in Washington D.C., and has extensive experience leading large global organizations and programs.