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Officer who confronted gunman inside Maryland school to throw 1st pitch at Nationals game

Allen Kee/ESPN Images(WASHINGTON) -- The resource officer who confronted a gunman inside a Maryland high school last month threw the ceremonial first pitch at the Washington Nationals' Opening Day game today.

When shots were fired at Great Mills High School on March 20, the school's sole resource officer, Deputy Blaine Gaskill, responded immediately, authorities said.

Two days after the shooting, Willey's mother tearfully announced her daughter would be taken off life support. Willey died hours later. Desmond survived.

Willey and the suspected gunman "had a prior relationship which recently ended," the sheriff's office said, adding that the shooting did not appear to be random.

Maryland Gov. Larry Hogan called Gaskill, 34, a "very capable school resource officer" who is also a SWAT team member.

"This is a tough guy who apparently closed in very quickly and took the right kind of action," Hogan said at a news conference. "And I think while it's still tragic, he may have saved other people's lives."

The Nationals' home opener against the New York Mets began at 1:05 p.m.

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