Days after a lone gunman shot a congressman at a Virginia baseball field, the sight of a suspicious man sparked panic Saturday at a youth baseball tournament in Harford County.
Hundreds of people ran screaming from a pair of ballfields at Harford Community College, witnesses and police said, after someone shouted that a masked man at the perimeter had a gun.
More than 50 law enforcement officials — including a SWAT team and a helicopter — from five different agencies descended on the tournament within minutes, but they never found a suspect.
"We're not saying this is not real or a hoax. We're treating it as real," said Maj. William Davis, chief of police...