BALTIMORE, MD—A Florida man has been found guilty of plotting to blow up substations in Maryland, prosecutors said this week. A federal jury on Monday found Brandon Russell, 29, of Orlando, Florida, guilty of conspiracy to damage an energy facility on Monday after a six-day trial, the U.S. Attorney’s Office for the District of Maryland said. U.S. Attorney Erek L. Barron and FBI Special Agent in Charge William J. DelBagno announced the jury’s verdict…