In a demonstration meant to show the dangers of illegal fireworks, a deputy from the Orange County Sheriff’s Department bomb squad on Tuesday set off an explosive which shattered a watermelon into minuscule particles and blew a hole through the table where the thick-skinned fruit had been placed. The explosion also left marks on a large garage door adjacent to the table. The impactful – and loud – demonstration took place at Orange Fire Department headquarters and was coordinated by ReadyOC, the leading emergency preparedness agency in the county. Funded by a grant from the Department of Homeland Security, ReadyOC…