“The Most Secretive Concert”
"Spookstock has raised millions for the CIA Officers Memorial Foundation and the Special Operations Warrior Foundation, which look after the families of CIA officers and special operations forces killed in the field. Last year, after expenses, each charity received about $400,000, according to Spookstock board member Mark Kelton..."
https://nypost.com/2019/11/29/spookstock-inside-the-worlds-most-secretive-concert/