The Eisenhower administration took office on 20 January 1953. When Eisenhower replaced the PSB with the Operations Coordinating Board (OCB) on 2 September 1953, he also did away with the 10/5Panel, reverting to "a smaller group identical to the former 10/2Panel, without OCB staff participation." On 15 March 1954, Eisenhower approved NSC5412, which required CIA to consult with OCB. Although Eisenhower would later congratulate the CIA with its success in deposing Guatemala's democratically elected President, Jacobo Árbenz, he was privately irked by CIA's unauthorized bombing of SS "Springfjord". According to Prados, that incident "convinced Eisenhower of the need for more rigorous control over covert action".