WASHINGTON (Reuters) – The Pentagon shrunk the size of its delegation traveling to the Singapore Airshow, a Pentagon official said, as the impact of the coronavirus has reduced participation in the event.

Undersecretary of Defense Ellen Lord will no longer attend the event “due to extenuating circumstances”, Lieutenant Colonel Mike Andrews said in a statement.

Lord is the Pentagon’s chief weapons buyer and was the Pentagon’s lead representative at the event. Other Pentagon leaders including uniformed military officials plan to attend.

The airshow will continue next week, but organizers might look to limit public visitors, a Singaporean official said on Friday, as Singapore reported three more coronavirus cases that authorities have not yet linked to previous infections or travel to China.

The new cases take Singapore’s virus tally to 33 with the alert level raised to orange, denoting the disease is severe and passes easily from person-to-person. Red – the highest alert level – indicates it is spreading widely.

The trade portion of the airshow, held every two years, is due to begin on Feb. 11.

U.S. weapons maker Lockheed Martin Co said on Thursday it would reduce its attendance at the Singapore Airshow also due to the coronavirus outbreak in China.

Business jet manufacturers Bombardier Inc,, Textron Inc and General Dynamics Corp’s Gulfstream division are among those to have pulled out of the airshow.

Reporting by Mike Stone in Washington, D.C. Editing by Janet Lawrence