 Other members of Interpen reportedly included Loran Hall, Roy Hargraves, William Seymour, Lawrence Howard, Steve Wilson, Howard K. Davis, Edwin Collins, James Arthur Lewis, Dennis Harber, Bill Dempsey, Dick Whatley, Ramigo Arce, Ronald Augustinovich, Joe Garman, Edmund Kolby, Ralph Schlafter, Manuel Aguilar and Oscar Del Pinto.Hemming was a leader of Interpen, or "Intercontinental Penetration Force", a group of anti-Castro guerrillas who trained at No Name Key in the early 1960s.Declassified FBI files show that the agency had an informer within Interpen.