 Complete the following phrase:  After working late into the evening of 23 March 1976, in the hope of averting a renewed business lockout, Perón celebrated her executive assistants birthday with staff. Alerted to suspicious military exercises, she boarded the presidential helicopter shortly after midnight. It did not fly her to the Quinta de Olivos presidential residence but to an Air Force base in nearby Jorge Newbery International Airport, where she was formally 