Defendant Jodi Arias tries to maintain composure as she testifies about killing Travis Alexander in 2008 during her murder trial at Judge Sherry Stephens&#39; Maricopa County Superior Court in Phoenix on Wednesday, Feb. 20, 2013. Arias is charged in the 2008 stabbing and shooting death of her lover, Alexander. She faces the death penalty if convicted of first-degree murder. (AP Photo/The Arizona Republic, Charlie Leight, Pool)