According to a spokesperson from Joint Base Andrews, several individuals fell ill after a suspicious package was opened at the base around 1 p.m. on Thursday.

Medical teams on the base quickly responded and provided care to multiple individuals who reported feeling unwell. Officials confirmed that all affected individuals were in stable condition and were subsequently released.

“As a safety measure, both the building where the package was opened and an adjacent structure were evacuated, and a perimeter was set up,” the spokesperson told Fox News. “Responders from Joint Base Andrews arrived on the scene, found no immediate threats, and normal operations have since resumed. An investigation into the incident is currently underway.”

The image above shows the sign for Joint Base Andrews, captured on March 26, 2021, at Andrews Air Force Base, Maryland. (AP Photo/Alex Brandon)

Authorities have yet to reveal the contents of the package or the source of the symptoms experienced by those affected. To ensure safety, the base underwent a temporary lockdown while emergency teams evaluated the situation.

The lockdown allowed both installation and emergency personnel to thoroughly assess and address the situation at the base.

Air Force One lands at Joint Base Andrews.  (National Geographic/Renegade Pictures)

Several of the individuals were taken to Malcolm Grow Medical Center on the base for evaluation.

Joint Base Andrews is home to Air Force One and other aircraft that support the president, vice president and senior U.S. leaders.

President Donald Trump gestures as he boards Air Force One, as he departs for New York at Joint Base Andrews, Md., on Friday, Sept. 26, 2025.  (Reuters/Elizabeth Frantz)

Officials said the investigation remains active as they work to determine the source and nature of the package.