 Complete the following phrase:  Since leaving office, Bush has kept a relatively low profile though he has made public appearances, most notably after the release of his memoirs in 2010 and for the 10th anniversary of the September 11 attacks in 2011. In March 2009, he delivered his first post-presidency speech in Calgary, Alberta, appeared via video on The Colbert Report during which he praised U.S. troops for earning a special place in American history, and attended the funeral of Senator Ted Kennedy. Bush made his debut as a motivational speaker on October 26 at the Get Motivated seminar in Dallas. In the aftermath of the 