The officer was one of four people wounded in an afternoon shooting that has prompted lockdowns at local schools, officials said.
The suspect, a 16-year-old male student, has been apprehended, California police say.
Jeff Finkelstein of the Jewish Federation of Pittsburgh told WHNT that he estimated between 60 and 100 people were inside
U.S. Joint Base Andrews is about 15 miles from the White House and the home of Air Force One.
One of the first lessons from the Paris attacks for Australian policy makers is that, in light of a rising domestic terror threat, our active shooter police response capability needs to be rapidly enhanced.