Video by Associated Press

Defense Secretary Pete Hegseth and a group of his advisors visiting the Tomb of the Unknown Soldier on Veterans Day at Arlington National Cemetery were loudly admonished by the specially-trained Sentinel guarding the site, who stated that “All visitors must maintain an atmosphere of silence and respect at all times.” The admonishment occurs 35 seconds into the above video.

The Tomb of the Unknown Soldier is Arlington Cemetery’s most iconic memorial and is guarded 24 hours a day, 7 days a week by specially trained soldiers. U.S. Code of Federal Regulations has a strict set of rules regulating the behavior of all visitors to federal cemeteries and Arlington National Cemetery requires visitors to adhere to certain etiquette,  including speaking quietly and maintaining strict, respectful decorum at all times.

Hegseth’s group was seen using the location as a backdrop for photographs, and then laughing as they walked away, drawing the loud reprimand from the soldier.