Washington — Congressional investigators are reviewing the deaths and disappearances of at least 11 scientists and researchers connected to U.S. aerospace, defense, and advanced technology programs since 2022, raising questions about whether any of the cases share common factors with potential national security implications.
The House Oversight Committee has requested briefings from the FBI, NASA, the Department of Energy, and the Department of Defense. Committee Chairman James Comer (R-KY) and Rep. Eric Burlison (R-MO) said the review aims to determine whether the incidents are isolated or part of a broader pattern that could affect personnel working on sensitive government and commercial projects.
Comer said identifying any potential links is essential to assessing possible risks to national security and protecting scientists involved in critical research.
The White House acknowledged the congressional inquiry. Press Secretary Karoline Leavitt said the administration supports a careful review of the reports if the underlying information is verified. President Donald Trump also confirmed that federal officials are examining the matter but emphasized that investigators have not reached any conclusions.
FBI Director Kash Patel told lawmakers that the bureau is coordinating with federal, state, and local authorities to determine whether any of the cases involve classified information, foreign influence, or other criminal activity.
NASA said it will fully cooperate with the investigation while noting that it has found no evidence of a national security threat involving the agency. The Departments of Defense and Energy are also expected to provide briefings to congressional investigators.
The reported cases involve researchers from government agencies and private aerospace companies, including NASA, SpaceX, and Blue Origin. Many worked in specialized fields such as planetary defense, asteroid tracking, and advanced aerospace technology.
At this stage, authorities have not confirmed that the deaths or disappearances are connected. Officials continue to caution against speculation while investigations remain ongoing. The House Oversight Committee is expected to hold additional hearings and seek further information as it evaluates whether any evidence points to foul play or outside interference.
The review reflects broader concerns about protecting highly skilled personnel working in the nation’s aerospace and defense sectors during a period of increasing international competition. Federal agencies are expected to provide additional updates as the investigation progress
