April 12, 2001 China released 24 USN EP3 crewmen following collision with PRC fighter on April 1.
REAR ADMIRAL JEFFERSON RICE DENNIS, U.S. NAVY
April 10, 1909 – February 17 1958
April 5, 1929, the the U.S. Secretary of War transferred cryptologic functions from the Military Intelligence Division to the Signal Corps – creating the Signals Intelligence Service (SIS) with William F. Friedman as its head.
April 1, 2001, the Hainan Island incident occurred when a mid-air collision between a United States Navy EP-3E ARIES II signals intelligence aircraft and a People’s Liberation Army Navy (PLAN) J-8II interceptor fighter jet resulted in an international dispute between the United States of America and the People’s Republic of China.