The Illinois man also tried to sneak knives into his carry-on at BWI Airport in Maryland.
Man displayed knife before running away after woman resisted attack.
A large knife was thrown at an officer, and police cars were damaged after an early evening vigil for Vonderrit Myers.
St. Louis police released more details about a fatal officer-involved shooting on Riverview that happened at about 12:30 p.m. Tuesday.
He is charged with unlawful use of a weapon.
Sheet-metal knife made from broken light fixture.
A January sentencing is scheduled for the Hillsboro man.