Naval Academy, police say. We are learning more about the man accused of sending an online threat to the U.S. Indiana resident Jackson Fleming, 23, was arrested in connection to last week's threat at the Naval Academy. A source close to the investigation told FOX 5 that Fleming, a ‘"dismissed midshipman" made the online threats spoofing a Naval Academy IP address. READ MORE: Indiana man charged with making online threat that caused US Naval Academy lockdownLaw enforcement alleges that Fleming sent the online threat through a social media app from his home Indiana.