SECAF, CSAF send out suicide prevention letter Published May 4, 2009 Offices of the Secretary and Chief of Staff of the Air Force WASHINGTON -- In their latest "Letter to Airmen," Secretary of the Air Force Michael Donley and Chief of Staff of the Air Force Gen. Norton Schwartz state the importance of Airmen remaining vigilant to the cause of suicide prevention. The letter, dated April 24, can be found here.