kamala harris‘ The Secret Service team faces a violent threat this week, having to save one of their agents… from one of their own!!!

secret service agent Anthony Guglielmi Tells TMZ … At around 9 a.m. Monday, a U.S. Secret Service special agent supporting the vice president’s departure from Joint Base Andrews began showing signs his colleagues found disturbing.

We’re told they removed the agent from duty and called medical personnel. Veep was not around when the incident occurred and it did not affect its takeoff.

A federal source with direct knowledge tells us at least one distress signal displayed by the agent was evident … as he attacked the detail’s supervising agent.

Other outlets are reporting that the agent who attacked his supervisor was reportedly handcuffed after the incident.

Harris was reportedly headed from Joint Base Andrews in Maryland to New York City … where she was scheduled to appear on “The Drew Barrymore Show.”