Federal agencies are investigating at least two possible incidents on US soil, including one near the White House in November of last year, that appear similar to mysterious, invisible attacks that have led to debilitating symptoms for dozens of US personnel abroad.
원문출처 : https://www.cnn.com/2021/04/29/politics/us-investigating-mysterious-directed-energy-attack-white-house/index.html
원문출처 : https://www.cnn.com/2021/04/29/politics/us-investigating-mysterious-directed-energy-attack-white-house/index.html