The Washington Navy Yard shooting occurred on September 16, 2013, when 34-year-old Aaron Alexis fatally shot 12 people and injured three others in a mass shooting at the headquarters of the Naval Sea
Aaron Alexis FBI Image
Defense Secretary Chuck Hagel and others lay a wreath at the Navy Memorial on September 17 in honor of the victims.
President Obama receives an update on the investigation of the shooting from FBI Director James Comey, left, and Attorney General Eric Holder in the Oval Office on September 17, 2013.
Extremely low frequency
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Extremely low frequency is the ITU designation for electromagnetic radiation with frequencies from 3 to 30 Hz, and corresponding wavelengths of 100,000 to 10,000 kilometers, respectively. In atmospher
Washington Navy Yard shooting
…hearing voices in his head. According to an FBI official after the shooting, Alexis was under the "belief that he was being controlled or influenced by extremely low-frequency electromagnetic waves". A message later obtained by federal authorities from Alexis's personal computing devices said, "Ultra low frequency attack is what I've been subject…
1982 aerial view of the U.S. Navy Clam Lake, Wisconsin, ELF transmitter facility, used to communicate with deeply submerged submarines. The rights of way of the two perpendicular 14 mile (23 km) overhead transmission lines, which constituted the ground dipole antenna, and which radiated the ELF waves, can be seen at the lower left.