The shooting sent shock waves throughout the nation 's capital and elsewhere . Stephen Tyrone Johns died `` heroically in the line of duty , '' museum says . Suspect is 88-year-old white supremacist , law enforcement officials say . Score: 6 Security guard and shooter were wounded in exchange of gunfire , police say .
Stephen Tyrone Johns died `` heroically in the line of duty , '' museum says . Suspect is 88-year-old white supremacist , law enforcement officials say . Score: 6 Security guard and shooter were wounded in exchange of gunfire , police say .