Australians recently remembered Sept. 11, 2001 with solemnity, respect, and reflection. Responding to this day of infamy strengthened and reaffirmed the US-Australia alliance. This year not only marks a decade since 9/11 but it also marks the 60th anniversary of the alliance since the ANZUS Treaty (Australia, New Zealand, and United States) was signed in 1951. Australia’s response to 9/11 was informed and pursued in part as a consequence of the alliance and treaty commitments.