 A shocking development. A 20-year-old man uses an explosive device to catch Piqua High School on fire Monday night. And the damage left behind, those windows blown out, and the charring all over the building and spreads up the wall here. WHIO's John Bedell says Grady Egerton is in jail after a SWAT standoff. WHIO has learned flames ate a house on Delaware Avenue in Dayton Tuesday.